Mario replaced 72 tires on the small and large trucks in his fleet. He replaced 3 times as many tires on the large trucks as on the small. How many tires did he replaced on the small trucks?

Answer 1

Let x = tires on small trucks. Then 3x = tires on large trucks

3x + x = 72

Solve for x.

Answer 2

24

Answer 3

It comes down to division or fractions
72 ÷ 4 = 18
18+18+18 = 54... 3/4 of total sum (3 time as many on large trucks )
18 tires Mario replaced on small truck
( 18 ) +18 + 18 + 18 = 72
18 × 4 = 72 subtract 3/4 = 54 remaining 18 = 1/4