Question

Three fifth of a number is 30 more than 50 percent of that number . What is 80 percent of that number ?

Answer 1

let number is x
a/c 3/5x=30+x/2
( 3/5-1/2)x=30
1/10x=30
x=300
number is 300
now 300x80/100=240
240 is answer