Question

320/(b*8-40)=10
(n/4-35)*6=150

Answer 1

320/(b*8-40)=10
8b-40=320/10
8b-40=32
8b=32+40
8b=72
b=72/8
b=9

(n/4-35)*6=150
n/4-35=150/6
n/4-35=25
n/4=25+35
n/4=60
n=60*4
n=240