১২৪৫১
4 men and 6 women can complete a work in 8 days, while 3 men and 7 women can complete it in 10 days. In how many days will 10 women complete it?
উত্তর
40 days
১২৪৫২
Two-fifth of one-fourth of three seventh of a number is 15. What is the half of the number?
উত্তর
175
১২৪৫৩
Length of a train is 170 meters and speed of train is 63 km/hour. This train can pass a bridge in 30 seconds, then find the length of the bridge.
উত্তর
355m
১২৪৫৪
A cylindrical rod of iron, whose height is equal to its radius, is melted and cast into spherical balls whose radius is half the radius of the rod. Find the number of balls.
উত্তর
6
১২৪৫৫
Rahim borrowed Tk. 800 at 6% per annum and Karim borrowed Tk. 600 at 10% per annum. After how much time, will they both have equal debts?
উত্তর
50/3 yr
১২৪৫৬
The average of 6 numbers is 25. If 3 more numbers, with an average of 22 are added to these numbers, what will be the average of the combined 9 numbers?
উত্তর
24
১২৪৫৭
The difference of two numbers is 1365. On dividing the larger number by the smaller, we get 6 as quotient and the 15 as remainder. What is the smaller number?
উত্তর
270
১২৪৫৮
The product of two positive numbers is p. If each of the number is increased by 2, the new product is how much greater than twice the sum of the two original number?
উত্তর
(p + 4) times
১২৪৫৯
A jar contains white, red and green marbles in the ratios 2 : 3 : 5. Six more green marbles are added to the jars, and then the ratio becomes 2 : 3 : 7. How many white marbles are three in the jar?
উত্তর
6
১২৪৬০
A and B together can do a piece of work in 40 days. A having worked for 20 days, B finishes the remaining work alone in 60 days. In how many days shall B finish the whole work alone?
উত্তর
80 days