Omar wants to buy a pair of shoes which costs $80. In addition to the selling price, he has to pay a 5% GST. How much does he have to pay altogether?

38.5

step-by-step explanation:

lets say, first number = r

second number = 3r+7

total = 49

(r)+(3r+7)= 49

4r+7 = 49

4r = 42

r = 42/4

r= 10.5

3r+7 = 3(10.5)+7 = 38.5

hope this

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it should be described as a proper fraction.