Noel's club wants to purchase 8 chairs for their meeting room. the original cost for each chair was $18.99. the chairs are now on sale for 10% off. how much will noel's club save if they buy the 8 chairs on sale?
which answer gives the correct solution and explains how to check if the answer is reasonable?
a.
solution: $80
explanation: if the club paid full price for the 8 chairs, they would pay about $20 for each chair. since the chairs were 10% off, the club would pay $10 for each chair ($20 - $10).
that means they would save about 8 × $10 or $80.
b.
solution: $15.20
explanation: if the club paid full price for the 8 chairs, they would pay about $160 (8 × $20). since the chairs were 10% off, that means the club would save about 0.10 × $160 or about $16.
c.
solution: $71.92
since the original price for each chair was about $19, the club would save about $9 per chair ($19 – $10). for all 8 chairs the club would save 8 × $9 or $72.