+68 Alvin spent $28 more than 2/5 of his money on books. He was left with $44. How much did Alvin have at first?
+313
a)
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.
b)
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= 72+2x/5
x-2x/5 = 72
(5x-2x)/5 = 72
3x/5 = 72
x=72(5/3)
x= 120
Therefore, Advin had total $120 at first.
