Sam would have to pay $510 to buy 5 shirts and 2 suck belts.
Step-by-step explanation:
Let,
Cost of one shirt = x
Cost of one belt = y
According to given statement;
6x+4y = 660 Eqn 1
x = 3y Eqn 2
Putting value of x from Eqn 2 in Eqn 1
[tex]6(3y)+4y=660\\18y+4y=660\\22y=660[/tex]
Dividing both sides by 22
[tex]\frac{22y}{22}=\frac{660}{22}\\y=30[/tex]
Putting y=30 in Eqn 2
[tex]x=3(30)\\x=90[/tex]
One shirt costs $90 and one belt cost $30.
Price of 5 shirts = 90*5 = $450
Price of 2 belts = 30*2 = $60
Total = 450+60 = $510
Sam would have to pay $510 to buy 5 shirts and 2 suck belts.
Keywords: linear equation, addition
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