Alvin spent $28 more than 2/5 of his money on books. He was left with $44. How much did Alvin have at first?
Step 1: suppose advin had x dollars at first.
Step 2: make suitable equations that represents the actual scenario.
Step 3: find the value of x.
Total amount left= $44.
Total amount spent on books= $28+2/5 of his initial money.
Suppose advin had $x initially.
then, initial money= money left+ money spent
therefore, x=44+(28+(2/5)x )
x-2x/5 = 72
(5x-2x)/5 = 72
3x/5 = 72
Therefore, Advin had total $120 at first.