A can complete a work in 15 days and B can complete the work in 20 days. If B works for 8 days and left the job, then in how many days the A can complete the remaining job?
A. 6 days
B. 7 days
C. 8 days
D. 9 days
E. 10 days
সঠিক উত্তরঃ
D.
9 days
Explanation:
Related Questions (Any University/Year)
- সম্পূর্ণ খালি একটি চৌবাচ্চা একটি পাইপ দিয়ে ৫ ঘণ্টায় সম্পূর্ণ ভর্তি করা হয়। দ্বিতীয় একটি পাইপ দিয়ে চৌবাচ্চাটি পূর্ণ করতে ৩ ঘণ্টা সময় লাগে। দুটি পাইপ একসাথে ব্যবহার করে চৌবাচ্চাটি ২৩ অংশ পূর্ণ করতে কত সময় লাগবে?
- The sum of the ages of 4 children born at the intervals of 3 years each is 42 years. What is the age of the youngest child?
- Rima bought 4 books that cost Tk 6 each and 2 books that cost tk 3 each .what's the averge cost of the six books?
- The average of eight numbers is 14. and the average of six of these numbers is 16. What is the average of the remaining two numbers?
- ঢাকা-আরিচা বাসে প্রথম 4 কিমি ভ্রমনের ভাড়া 10.00 টাকা, পরবর্তী 20 কিমি পর্যন্ত প্রতি কিলোমিটারের ভাড়া ৯০ পয়সা এবং পরবর্তী প্রতি কিলোমিটারের ভাড়া 70 পয়সা। 25 কিমি দূরত্বে ভ্রমনের ভাড়া কত?
- একটি ক্লাসে ৩০ জন শিক্ষার্থী আছে । তাদের মধ্যে ১৮ জন ফুটবল খেলে ও ১৪ জন ক্রিকেট খেলে । ৫ জন কিছুই খেলেনা । কত জন ফুটবল ও ক্রিকেট উভয়ই খেলে ?
- A trader incurs a loss of 10% from selling an item , if the selling price was taka 200 more he would have made a profit of 15% . What was the cost of the item ?
- একটি পরিবারের মোট আয় ৮০,০০০/- টাকা। পরিবারটি প্রতিমাসে খাদ্য কেনায় ৩০,০০০/-, বাসা ভাড়ায় ২০,০০০/-, যাতায়াতে ১০,০০০/-, ও বই কেনায় ৫,০০০/- খরচ করে। যাতায়াত খাতে পরিবারটি প্রতিমাসে আয়ের কত শতাংশ খরচ করে?
- Six years ago Alam was half the age he will be in six years. How old is Alam?
- If the cost of a long-distance phone call is P paisa for the first minute and 2/3 P paisa for each additional minute, what is the cost, in paisa, of a 10-minute call of this type?
- What percent of 50 is 15?
- A box contains 24 red socks and 43 green socks. How many green socks must be removed from the box so that 60% of the socks in the box will be green?
- A can do work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is:
- If y% of x is 29.Then x=?
- In making a radio set the cost of labor and materials are in the ratio of 3:2 . A manufacturer sells a set for TK 1,500 to make a gain of 25% on the cost. What is the cost of the materials for the set?
- Quazi has a wheat business. He purchases wheat from a local wholesaler at a particular cost per pound. The price of wheat at his stores is $3 per pound. His faulty spring balance reads 0.9 pounds for a pound. Also, in the festival season, he gives a 10% discount on the wheat. He found that he made neither a profit nor a loss in the festive season. At what price (per pound) did Quazi purchase the wheat from the wholesaler?
- In a Class of 78 students 41 are taking French, 22 are taking German. Of the students taking French or German, 9 are taking both courses. How many students are not enrolled in either course?
- Mehran was asked to find the value of 7/12 of a sum of money. Instead of multiplying the same by 7/12, he divided it by 7/12 and his answer exceeded the correct answer by 95. The correct answer is:
- A এবং B একটি কাজ ৮ ঘন্টায় সম্পন্ন করতে পারে। C এবং D একই কাজ ১২ ঘন্টায় সম্পন্ন করতে পারে। যদি চারজন একই সাথে কাজ করে, তাহলে উক্ত কাজটি সম্পন্ন করতে আনুমানিক কত সময় লাগবে?
- Rana is aged three times more than Moin. After 8 years, he would be two and a half times of Moin's age. After further 8 years, how many times Rana be of Moin's age.
- A 112 meter rope is cut into three pieces with each piece twice as long as the previous one. How long is the longest piece?
- If n is an integer such that when n is divided by 2, the remainder is 1, when n is divided by 3, the remainder is 2, and when n is divided by 4, the remainder is 3. What is the least possible value of n?
- x+y=12 এবং x-y=2 হলে xy এর মান কত ?
- Lamisa's age is 5 years more than twice Gallb's age. Zihan's age is 13 years less than 10 times Galib's age. If Zihan is 3 times as old as Lamisa, how old is Lamisa?
- If y/x =1/5 and 2x+y=33, then what is the value of x?
- A train left Dhaka for Chittagong at 62 km per hour and at the same time another train left Chittagong for Dhaka at 48 km per hour on the same route. How far apart were the two trains one hour before they met?
- A trader normally makes a profit of 40 % on items he sells . If he reduces the price by 10% his sales increased by 40% . Let x be the total profit when he doesn't reduce the price and y the total profit when he reduces the price what is the ratio of y to x ?
- The ratio of girls to boys in a class is 8:7. The number of students in the class could be any of the following except
- Mr. Karim traveled from A to B at a speed of 3 km/hr and returned from B to A at a speed of 5 km/hr. the round trip required 8 hours what was the distance between A and B in km?
- A merchant was selling an item at a certain price, then marked it down 20% for a spring sale. During the summer, he marked the item down another 20% from its spring price. If the item is sold at the summer price, then what percent of the original price did it sell for?
- Instructions: DO NOT USE CALCULATOR. Figures are not drawn to scale. Arif can do a work in 12 hours. Arif finished two-thirds of the work and the remaining portion of the work was done by Babu, whose rate of working is just 20% of what Arif can do. How long did it take Babu to finish the remaining work in hours?
- Jo's collection contains US, Indian and British stamps. If the ratio of US to Indian stamps is 5 to 2 and the ratio of Indian to British stamps is 5 to 1,what is the ratio of US to British stamps?
- In a shipment of 120 machine parts, 5% were defective. In another shipments of 80 machine parts, 10% were defective. For the two shipments combined, what percent of machine parts were defective?
- Two people can make 2 bicycles in 2 hours. How many people are needed to make 12 bicycles in 6 hours?
- Laila invested Tk 10000 in a new mutual fund account exactly 3 years ago. The value of the account is increased by 10 percent during the first year, increased by 5 percent during the second year and decreased by 10 percent during the third year. What's the value of the account today?
- A can do a work in 15 days and B in 20 days. If they work on it together for 4 days, then the fraction of the work that is left is:
- The average age of a man and his son is 20. After 10 years, their age will be in the ratio 2:1. What was the age of the man and his son 5 years ago respectively?
- x কে ৭ দিয়ে ভাগ করলে ভাগশেষ হয় ১। যদি y কে ৭ দিয়ে ভাগ করা হয় তাহলে ভাগশেষ হয় ২। তাহলে, x + y কে ৭ দিয়ে ভাগ করলে ভাগশেষ কত হবে?
- The greatest possible value of C is how much greater than the smallest possible value of D?
- ৩০ বছর পর জেকভ তার বর্তমান বয়সের চারগুণ হবে । তার বর্তমান বয়স বের কর:
