The charges of three buffet catering companies X, Y and Z are shown below.
Company | Buffet table setting and delivery cost per day | Cost per person per day |
X | $170 | $15.99 |
Y | Nil | $23.88 |
Z | $58 | $19.99 |
(a) Kirean wants to cater for a total of 80 people for 1 day at the lowest possible cost. Which company should she select? (1m)
(b) Company X and Z would charge the same amount for Rahan’s 4-day event. How many people did he want to cater for? (2m)
Answers:
ReplyDelete3.a) Company X
b) 28
yeah! got that ans too.
ReplyDeleteWhat the question meant by "Nil"?
ReplyDeleteHow did you guys get that answer?
Can you explain?
Ayisha
@Ayisha - "Nil" means "not applicable" - in this case, it means that there is no table setting/delivery cost for Company Y.
ReplyDeleteFor a), we simply need to calculate the cost of catering for 80 people in 1 day for each company and write the company whose cost is the lowest as answer. b) is slightly complicated tho. The 4 days is meant to throw us off (it's the same answer u get either way) so we take it as only 1 day. As the cost per person is higher for company Z than for X, the reason the total cost is the same is because delivery cost is lower for Z than X. So, we take 170 minus 58 to be 4u (19.99u - 15.99u; we assume number of people is u) and we take 112 and divide it by 4u to get 28. Done.
Ya my ans is 28 also.
ReplyDeleteMatthias
@Devesh:Thx ya finally I got it..Sorry for late reply...
ReplyDeleteMy answer
ReplyDeletea)Company X
b)28
Ng Wen Qi
YAY! Finally getting the answer really makes my day!
ReplyDeleteIvan