In an exam, a number had to be multiplied by 7, but by mistake a student divided it by 7.

Find the number which when multiplied by 7 is increased by 78.

If 1 is subtracted from a number and the difference is multiplied by 1/2, the result is 7.

Multiply 7.43 by 14.1

7 is added to a certain number the sum is multiplied by 5; the product is divided by 9 and 3 is subtracted from the quotient.Thus,if the remainder left is 12, what was the original number? 20 (b) 30 (c) 40 (d) 60

A girl was asked to multiply a number by (7)/(8) , instead she divided the number by 7/ 8 and got the result 15 more than the correct result. The sum of the digits of the number was :

A student was asked to multiply a given number by (4)/(5) .By mistake,he divided the given number by (4)/(5) .His answer was 36 more than the correct answer.What was the given number?

Instead of multiplying a number by 0.72, a student multiplied it by 7.2. If his answer was 2592 more than the correct answer, then the original number was