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