The answer is 40
40
10
1/2*1/5*1/5*1550+9=40
22.5 900 / 40 = 22.5
one fifth of 40 is the same as 40 divided by 5 which is 8.
2/5 or 40%
eight divied by one fifth is 40. this is because you have to multiply by the reciprical of one fifth which is 5. five times eight is 40
40
8/40 + 5/40 = 13/40
1/40
126