১৬৫৭১
A can do a work in 15 days and B in 20 days. They work on it together for 4 days, then the fraction of the work that is left is -
উত্তর
8/15
১৬৫৭২
A ferry can carry 24 buses or 36 cars at a time. If there are 18 buses on the ferry, how many cars can be loaded onto it?
উত্তর
9
১৬৫৭৩
In a certain English class, (1/4) of the number of girls is equal to (1/6) of the total number of students. What is the ratio of the number of boys to the number of girls in the class?
উত্তর
1 : 2
১৬৫৭৪
If the average (arithmetic mean) of x and y is 60 and the average (arithmetic mean) of y and z is 80. What is the value of (z - x)?
উত্তর
40
১৬৫৭৫
Babu's income is Tk. 1,000 more than that of Selim. Their total salary is Tk. x. What is Selim's salary?
উত্তর
(x/2) - 500
১৬৫৭৬
If x and y are positive integers, each greater than 1, and if 13(x - 1) = 17(y - 1), what is the least possible value of (x + y)?
উত্তর
32
১৬৫৭৭
If b = 9d - c and d = (a/6), what is the average (arithmetic mean) of a, b, c and d?
উত্তর
4d
১৬৫৭৮
If 75% students of a class answered the 1st question on a certain test correctly, 55% answered the 2nd question on the test correctly and 20% answered neither of the questions correctly, what percent answered both correctly?
উত্তর
50%