Question

Think a number, double it, add 7 and then multiply it by 4 and then divide it by 6, if the answer is 10, What is the number?

Answer 1

Answer:

4

Step-by-step explanation:

The trick to solving these questions is to work backwards.

We can work backwards from the answer by performing the opposite of the operations given in the question.

A number was doubled, added to 7, multiplied by 4, divided by 6 to get 10.

Therefore, doing the opposite of those operations would require multiplying 10 by 6, dividing it by 4, subtracting 7, and halving it.

Remember to do it in the order specified by the problems.

Let us convert this written statement to a mathematical statement.

We have to multiply 10 by 6.

10 x 6 = 60.

Now, dividing 60 by 4 gives 15.

Subtracting 7 from 15 gives 8.

And halving 8, (dividing 8 by 2) gives 4.

4 is the number.