At Lions High school 100 students are taking chemistry and 80 students are taking Biology. If 20 students are taking both chemistry and Biology , what is the ratio of the students taking only chemistry to the number taking only Biology?
A. 3/4
B. 4/3
C. 5/4
D. 1/4
সঠিক উত্তরঃ
B.
4/3
Explanation:
Related Questions (Any University/Year)
- How much will it cost to fence a field that is 12 feet long and 42 feet wide with fence that costs tk 10 a yard?
- The smallest of three consecutive even integers is 8 less than three times the largest. What is the largest of these integers?
- 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?
- A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is:
- একটি ঝুড়িতে আপেল এবং কমলা মিলিয়ে ২১ টি ফল আছে।প্রতিটি আপেল ১৫ টাকা এবং কমলা ১৮ টাকা দামে কেনা হয়েছে।সবগুলো ফল কিনতে যদি ৩৪৮ টাকা খরফ হয় তবে আপেল এবং কমলার মোট দামের পার্থক্য কত?
- The price of a laptop was sold at 10% discount on the price. If the profit is Tk. 2400 what was the cost of the laptop is TK?
- Two people can make 2 bicycles in 2 hours. How many people are needed to make 12 bicycles in 6 hours?
- A container holds 40 gallons which is 80% water and 20% acid. How much of the water must be evaporated to produce a solution containing 50% acid?
- The sum of the weights of P and Q is more than that of R and S taken together.The wight of P is half as much as the sum of the weights of Q and S. The sum of the weights of P and R is the same as the wight of Q and S taken together. Which of the following statements must be incorrect?
- Find the average of all whole numbers between 1 and 100 that end in 3.
- A car must complete a180-km trips in 4 hours. If he averages 50 km an hour for the first three hours of his trip, how fast must he travel in the final hour?
- If (1/ x) + (5 / y )= 4/3 and x=3y then y=?
- -1 থেকে কত বিয়োগ করলে বিয়োগফল শূন্য হবে?
- . If a, b and c are 3 consecutive integers in that order, which of the following has the lowest value?
- Rokon, Saim and Nafisa had ate at MCafe. Nafisa’s meal cost 50% more than Saim’s meal and Rokon’s meal cost 5/6th as much as Nafisa’s meal. If Saim paid Tk. 1000 for his meal, what was their total lunch bill?
- Lamisa's age is 5 years more than twice Galib'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?
- A sum of BDT 200 will be divided among 5 swimmers, named Emran, Durjoy, Chopol, Billal and Anabi, who have just finished a swimming competition. Everyone will receive at least BDT 5 and no two swimmers will receive the same amount of money. Emran has come \(1^{st}\) and will get BDT 80; Durjoy has come \(2^{nd}\), Chopol is \(3^{rd}\), Billal is \(4^{th}\) and Anabi is last. Moreover, the distribution of money is subject to the following conditions: • No one will get any fractional amount of money. • The swimmer who finishes earlier must receive more money than the swimmer(s) he defeats.. What are the greatest and least amount of money, consecutively, that Chopol can receive?
- পিতা ও পুত্রের বয়সের অনুপাত 7:3 । 4 বছর পূর্বে তাদের বয়সের অনুপাত ছিল 13:5। বর্তমানে কার বয়স কত?
- যদি (x+১) (x-৩) = 0 হয় তাহলে x এর মান কত?
- A man on tour travels first 160 km at 64 km/hr and the next 160 km at 80 km/hr. The average speed for the first 320 km of the tour is: