Question

on an airplane,there are two seats on the left side in each row and three seats on the right side.There are 150 seats altogether. a.How many seats are on the left side of the plane? b.How many seats are on the right side?

Answer 1

Let x be the number of rows.
We solve the equation: x * ( 2 + 3 ) = 150.
x * 5 = 150.
x = 150 ÷ 5 .
x = 30.
a. There are 2 * 30 = 60 seats on the left side of the plane.
b. There are 3 * 30 = 90 seats on the right side of the plane.