Question

1. The sum of three times a number and 15 is 42. Find the number.
2. If 3 is subtracted from twice a number, the result is 19. Find the number.
3.Gagan’s father is 45 years old. He is 5 years older than two times Gagan’s age. What is Gagan’s age?
4.The sum of three consecutive even numbers is 276. Find the numbers.
5.The age of father is 40 years more than that of his son. After 5 years, father’s age will be thrice his son’s age. Find their present ages.

Answer 1

Answer:

1.) 10

Step-by-step explanation:

1) The sum of a 3 times a number ( 3x ) + 15 = 45

3x = 45 - 15

3x = 30

x = 10