১১৭৫১
8 years ago, the ratio of A's age to B's age was 4:5. At present the ratio of is 4: 5. At present, the ratio of B's age to C's age is 4 : 5. At present, the difference between A's age and C's age is 20 years, then what is the sum of the ages of A, B and C?
উত্তর
148 years
১১৭৫২
There is a group of 5 men, 6 women and 8 children. 1 man, 1 woman and one child are going to be selected to play a game. In how many ways can the selection be done?
উত্তর
240 ways
১১৭৫৩
12 students working for 5 hours a day can solve a certain number of problems in 8 days. How many students are needed to solve five times the original number of problems, if they work at 4 hours a day for 15 days?
উত্তর
40
১১৭৫৪
If the ratio of simple interest and principal is 8 : 25/2 and rate of interest is equal to the time invested then find the time of investment?
উত্তর
8 years
১১৭৫৫
A seller marks his goods 30% above their cost price but allows 15% discount for cash payment. His percentage of profit when sold in cash is
উত্তর
10.5%
১১৭৫৬
A ladder is placed against a wall such that its foot is at a distance of 2.5 from the wall and its top reaches a window 6m above the ground. Find the length of the ladder.
উত্তর
6.5m
১১৭৫৯
A bond gets matured in 10 years. Ram invested Tk. 42,000 in this bond and received Tk.1,05,000 once the bond matured. If the bond was under simple interest, then what was the rate of interest per annum?
উত্তর
15%
১১৭৬০
A boy goes to school at a speed of 5 km/h and returns to the village at a speed of 4 km/h. If he takes 4 hours and 30 minutes in all, what is the distance between the village and the school?
উত্তর
10km