LET'S PARTY FOR THE LAST TIME
LET'S PARTY FOR THE LAST TIME
40 students attend a shared lunch. The ratio of boys to girls is 1 : 3
The price for a small pizza is $4.50 and a large pizza cost 13% more.
Each girl will eat 1 small and 1 large pizza.
Boys eat twice as many pizzas as girls.
All prices are GST exclusive (GST is 15%)
Your form teacher has asked you to calculate how much the shared lunch is going to cost, including GST.
40 students attend a shared lunch. The ratio of boys to girls is 1 : 3
The price for a small pizza is $4.50 and a large pizza cost 13% more.
Each girl will eat 1 small and 1 large pizza.
Boys eat twice as many pizzas as girls.
All prices are GST exclusive (GST is 15%)
Your form teacher has asked you to calculate how much the shared lunch is going to cost, including GST.
Answers:
number of girls = 3/4 x 40 = 30 number of boys 1/3 x 40 = 10
Girls
small pizza = 30 x 4.5 = $135
large pizza = (4.5 x 1.13) x 30 = $152.55 (or $152.70 if 5.09 used but try to avoid rounding mid way)
Total = $287.55 or $287.70 if 5.09 used from above)
Boys
small pizza = 20 x 4.5 = $90
large pizza = (4.5 x 1.13) x 20 = $101.7
Total = $191.70
Overall total = $479.25 x 1.15 (GST) or $479.4x1.15
= $551.14
number of girls = 3/4 x 40 = 30 number of boys 1/3 x 40 = 10
Girls
small pizza = 30 x 4.5 = $135
large pizza = (4.5 x 1.13) x 30 = $152.55 (or $152.70 if 5.09 used but try to avoid rounding mid way)
Total = $287.55 or $287.70 if 5.09 used from above)
Boys
small pizza = 20 x 4.5 = $90
large pizza = (4.5 x 1.13) x 20 = $101.7
Total = $191.70
Overall total = $479.25 x 1.15 (GST) or $479.4x1.15
= $551.14