Question

one number is 7 times another if their difference is 18 find the number​

Answer 1

Let the number be, 'n'

So, the other number is (n×7)

                                      = 7n

According to the problem,

7n-n = 18

⇒ 6n = 18

⇒ n = 18/6

⇒ n = 3

So, one of the number is 3.

∴ The other number is (3×7)

                                     = 21

So, the other number is 21.

Check whether the calculation is correct or not:

One of the number = 3

The other number is 7 times of 3 = (3×7)

                                                       = 21

The difference between the numbers is =(21-3)

                                                                  = 18

Hence, the numbers are 3 and 21.

Answer 2

Answer:

the sum three consecutive odd numbers is 75. which is the largest among them?