Respuesta :
You have to do a cross product to get your answer :
35$ → 7 cars
× $ → 4 cars
× $ = ( 35 × 4 ) ÷ 7
× $ = (140) ÷ 7
× $ = 20
So the answer is : You earn 20$ for washing 4 cars! ☻
35$ → 7 cars
× $ → 4 cars
× $ = ( 35 × 4 ) ÷ 7
× $ = (140) ÷ 7
× $ = 20
So the answer is : You earn 20$ for washing 4 cars! ☻