Joaquin is 4 yr older than Becky. 3 times the sum of their ages is 114.

Question

Write and solve an equation to find Joaquin's age?

Answer 1

Step 1 :

Joaquin is 4 years older than Becky .

Let Joaquin age is .

So the age of Becky is .

3 times the sum of their ages is 114.

Sum of the ages of Joaquin and Becky is : .

Step 2 :

3 times the sum of their ages is : .

Expand the expression using distributive law.

Distributive law : .

.

Add 12 to each side.

Divide each side by 6.

So the age of Joaquin is 21 years.

Solution :

The age of Joaquin is 21 years.