Question

a:b=$\frac{3}{8}$ a-b=75 a·b=?

Answer 1

a:b=3/8
8a=3b  b=8a/3
a-b=75
a-8a/3=75
3a-8a=225
-5a=225
a=-45
b=8*(-45)//3=-8*15=-120
a×b=(-45) ×(-120)=5400