Question

If 120% of a is equal to 80% of b, which of the following is equal to a+b?

Answer 1

120%of a =80%of b
120×a/100=80×b/100
100 cancle on both sides
120a=80b
so a/b=80/120
a/b=2/3
So a=2 and b=3
a+b=2+3
a+b=5