Question

When the double of a number is added to five times the number, the sum is 3 less than 80. What is the number?​

Answer 1

Step-by-step explanation:

let the no. be x.

given:

2x + 5x = 80 - 3

=> 2x + 5x = 77

=>7x = 77

=> x = 77/7

=> x = 11

verification:

2 × 11 + 5 × 11 = 77

= 22 + 55 = 77 hence, verified