১৩৮৬১
The ratio of A : B is 2 : 3, and the ratio of B : C is 4 : 5. If A 16, what is the value of C?
উত্তর
30
১৩৮৬২
A shopkeeper marks up his goods by 40% above the cost price. He then offers a discount of 15% on the marked price. What is the overall percentage profit?
উত্তর
19%
১৩৮৬৩
A sum of money doubles itself in 8 years at a certain rate of simple interest. In how many years will it become four times itself at the same rate of interest?
উত্তর
24
১৩৮৬৪
If 12 workers can complete a project in 15 days, how many days will it take for 9 workers to complete the same project assuming they all work at the same rate?
উত্তর
20
১৩৮৬৫
If x and y are positive integers such that 3 x + y = 9 4 and 2 x - y = 16, what is the value of x 2 - y 2 ?
উত্তর
32
১৩৮৬৯
Two similar triangles have areas in the ratio 4 : 9. If the perimeter of the smaller triangle is 20, what is the perimeter of the larger triangle?
উত্তর
30
১৩৮৭০
In a trapezoid, the lengths of the two parallel bases are 10 and 16. If the height of the trapezoid is 4, find the area of the trapezoid.
উত্তর
52