Question

Susan began counting backwards from 1298 by 4's saying one number every 5 seconds. At the same time Jim begins counting forward from 171 by 3's saying one number every 5 seconds what number will they both say at the same time

Answer 1

1298 - 4x =171 + 3x

Add 4x to both sides

1298 = 171 + 7x

Subtract 171 from both sides

1127 = 7x

Divide by 7 on both sides


x = 161

They will both say the number 161 at the same time.