১৩৫৬১
The diameter of the driving wheel of a bus is 140 cm. How many revolutions per minute must the wheel make in order to keep a speed of 66 km per hour?
উত্তর
250
১৩৫৬২
The perimeter of a rectangle is 20cm. If the length of the rectangle is 6cm, then its breadth will be-
উত্তর
4 cm
১৩৫৬৩
A man needs money for 120 days. He asked the banker for a loan and the banker charged Tk. 360 @ 6% per annum. What is the amount of loan?
উত্তর
Tk. 18000
১৩৫৬৪
The average monthly income of P and Q is Tk. 5050. the average monthly income of Q and R is Tk. 6250 and the average monthly income of P and R is tk. 5200. Calculate the monthly income of P.
উত্তর
Tk. 4000
১৩৫৬৫
The present ratio of students to teachers at a certain school is 30 to 1. If the number of students were to increase by 50 and that of teachers were to increase by 5, the ratio of students to teachers would then be 25 to 1. What is the present number of teachers?
উত্তর
15
১৩৫৬৬
A worker was hired for 7 days. Each day, he was paid Tk. 10 more than what he was paid for the previous day of work. The total amount he was paid in the first 4 days of work equaled the total amount he was paid in the last 3 days. What was his starting pay?
উত্তর
Tk. 90
১৩৫৬৭
A man sells 2 commodities for Tk. 4000 each, neither losing nor gaining in the deal. If he sold one commodity at a gain of 25%, then what is the cost price of another commodity?
উত্তর
Tk. 4800
১৩৫৬৯
The total number obtained by a student in Physics, Chemistry and Mathematics together is 120 more than the marks obtained by him in Chemistry. What is the average mark obtained by him in Physics and Mathematics together?
উত্তর
60
১৩৫৭০
In a factory, there are workers, executives and clerks. 58% of the employees are workers, 660 are executives and the remaining 264 employees are clerks. How many employees are there in the factory?
উত্তর
2200