If 7x - 5y = 13 and 2x7y: = 26, then 9x -12y=?
A. 13
B. 23
C. 26
D. 39
Explanation:
Related Questions (Any University/Year)
- Of the following the closet approximation to V(5.98×601.5/15.79)
- In a party of 77 people, there are twice as many women as children and twice as many children as men. How many children were present?
- An electric pole 36 meters high casts a shadow of 24 meters at a particular time of a day. Find the height of a tower if it casts a shadow of 48 meters under similar weather conditions
- A shipping clerk has five boxes of different but unknown weights each weighting less than 100 kg. The clerk weights the boxes in pairs. The weights obtained are 110, 112, 113, 114, 115, 116, 117, 118, 120 and 121 kg. What is the weight of the heaviest box?
- A circle has a radius of 4. If P and Q are points on the circumstances, the maximum length of which could separete P and Q 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?
- In a coffee mixture, the ratio of coffee. milk, sugar and cream are mixed by the weight in the ratio of 5:3: 2: 2 respectively. How many kg of coffee are there in 18 kgs of the mixture?
- বিশ্বকাপ ফুটবলে এশিয় অঞ্চলের সাতটি দল পরস্পরের সাথে খেললে মোট কয়টি ম্যাচ অনুষ্ঠিত হবে?
- A car must complete a 180-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?
- Each of the following problem has a question and two statements which are labeled 1. and. Use the data given in 1. and 2. to decide whether the statements are sufficient to answer the question.Select one of the following . a.Statements (1) ALONE is sufficient,but (2) ALONE is not sufficient. b.Statements (2) ALONE is sufficient,but (1) ALONE is not sufficient. c. Both statement TOGETHER are sufficient but statement alone is sufficient . A worker is hired for six days.He is paid Tk.2 more for each day of work than he was paid for the preceding day of work.How much was he paid for the day of work?
- A sum of money is divided among 3 persons in the ratio 4:6: 9 .If the largest share is tk 1000 more than the smallest share ,what's ithe total sum
- মোহন ও সোহানের বর্তমান বয়সের অনুপাত ২ : ৩ এবং তাদের বয়সের পার্থক্য ১২ বছর। সোহানের বর্তমান বয়স কত?
- A student who secures 20% marks in a test fails by 30 marks. Another student who secures 32% marks get 42 marks more than those required to pass. Pass percentage of marks is
- Shabbir has a brother one-fourth of his age and a sister two times of his age. If the combined age of all the three siblings is twenty more than thrice the age of the youngest, how old is Shabbir's sister?
- If the product of (1+2), (2+3) and (3+4) is equal to one half the sum of 20 and x , then x=?
- What is 0.04 x 0.032 in terms of percent?
- If the price of onion goes up by 25%, by how much should usage be reduced in order to keep the total expense for onion as before?
- There are 12 men on basketball team, and in a game 5 of them play at any one time, If the game is 1 hour long and if each man plays exactly the same amount of time, how many minutes each man play?
- If Masud can do a job in P days, while Minhaz can do the same job in Q days separately, how long will it take to finish the job if they work together?
- The members of an association decided to contribute equally to create a fund of Tk. 45,000. Five members refused to contribute, so each of the other members had to contribute additional tk. 15 for that fund. How many members were there in the association?