How big is Alex`s weekly allowance?

Question

Alex receives a weekly allowance from his parents for studying. Alex: "60% of my allowance goes to travel expenses" .If the allowance was raised by 40 dollars travel expenses would be no more than 40% of the allowance. "How big is Alex`s weekly money?

Answer 1

.6A = T

.4(A+40) = T

.4A +16 = T= .6A

.2A = 16

A = 16/.2 =160/2 = $80

60% of $80 = $48 for travel expenses

if the allowance were raised by $40 then it would be $120

40% of $120 = $48 for travel expenses

His allowance is no more than $80 weekly