4 times 18 is 72 use a calculator and divide 72 by each number and you’ll find numbers
A = (350/13) and B = (400/-13)
8x10 = 80
4x4 = 16
2x4 divided 2 = 4
80+16+ 4 = 100
$24 in 6 hours.
6 hours = $24
1 hour would be: $24/6 = $4
8 hours would then be: $4 * 8 = $32.
So he would make $32 in 8 hours.
Hope this explains it.