If 7x - 5y = 13 and 2x7y: = 26, then 9x -12y=?
A. 13
B. 23
C. 26
D. 39
Explanation:
Related Questions (Any University/Year)
- You can now purchase 6 more oranges with Tk 72 because of reduction in price by 25%. TORCalculate the previous price of one dozen of oranges
- The Warm Muffin Bakery's cookie sales are always 60 precent of its muffin sales. What would be the increase in The Warm Muffin Bakery's cookie sales if its muffin sales, increased from 10,000 to 20,000?
- 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?
- The cost price of a table and a chair together is TK. 690. If the table costs 30% more than the chair, then find the cost price of the table and the chair respectively.
- 15 workers can finish a job in 12 days. They work for 4 days, after which 5 additional workers join the team. In how many days will all of them together complete the remaining job?
- There are 40 socks in a drawer. 70% of the socks are red and the rest are blue. What is the minimum number of socks that must be taken from the drawer without looking in order to be certain that at least two red socks have been chosen?
- In Rajshahi 5 adults are unemployed for every 120 adults who have jobs. Out of 2125 adults, how many have jobs?
- Rahim and Sohail live in the same house and work in the same place. Rahim takes 20 minutes and Sohail takes 30 minutes to reach workplace. Sohail starts from the house 5 minutes earlier than Rahim starts. How many minutes would Rahim take to meet Sohail?
- If x # 0, then (x+7)/7x-1/x=?
- A long rope has to be cut to make 23 small pieces. If it is double folded to start with, how many times does it need to be cut?
- Oeshi has taken five math tests so far this semester. If she gets a 60 on his next test, that grade will lower her test average by 4 points. What is her average now?
- In a certain shipment 2% of the boxes shipped were damaged. If the loss per damaged box was Tk. 35 and the total loss due to damage was Tk. 700, how many boxes were shipped?
- Out of their annual net income, a couple spent 25 percent for food, 13.5 percent for entertainment, 20 percent for housing, 8 percent for car expenses, 15 percent for clothing, and saved the rest. What was the ratio of the amount saved to the amount spent for entertainment?
- 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 ?
- Thereare 209 doctors and nurses in a hospital. If the ratio of the doctors to the nurses is 11:8, then how many nurses are there in the hospital?
- পাঁচটি বিড়াল পাঁচটি ইঁদুর ধরতে সময় নেয় পাঁচ মিনিট। ৩০টি বিড়াল ৩০ টি ইঁদুর ধরতে কত সময় নেবে?
- 3, 9 ও 4 এর চতুর্থ সমানুপাতিক কত?
- A nut mixture consists of peanuts, pistachios, and macadamia nuts in the ratio 5:3:2, respectively, by weight. What amount of pistachios will be in 40 pounds of the mixture?
- If 0≤x≤5 and y<15, which of the following cannot be a possible value of xy?
- A and B together can complete a piece of work in 72 days, B and C together in 120 days and A and C together in 90 days. A, B and C together can complete the work in?