Question

Santosh is four more than three times the age of his cousin. If Santosh is 49 years old, then what is the age of his cousin?

Identify the two operations, in their appropriate order, needed to solve this equation.

Subtract and then multiply.
Add and then multiply.
Subtract and then divide.
Add and then divide.

Answer 1

it is number 3

Answer 2

His cousin is 15.

Subtract and then divide.

Explanation:

So, Santosh (49) is 4 years older than the triple of the age of his cousin (c)... we then get this equation system:

49 = 4 + 3c

We just have to resolve this simple system to find the age of the cousin.

We first subtract 4 on each side:

45 = 3c

Then we divide each side by 3:

15 = c

His cousin is 15 years old.