Date | May 2018 | Marks available | 3 | Reference code | 18M.2.SL.TZ2.T_4 |
Level | Standard Level | Paper | Paper 2 | Time zone | Time zone 2 |
Command term | Calculate | Question number | T_4 | Adapted from | N/A |
Question
A new café opened and during the first week their profit was $60.
The café’s profit increases by $10 every week.
A new tea-shop opened at the same time as the café. During the first week their profit was also $60.
The tea-shop’s profit increases by 10 % every week.
Calculate the café’s total profit for the first 12 weeks.
Calculate the tea-shop’s total profit for the first 12 weeks.
Markscheme
(M1)(A1)(ft)
Note: Award (M1) for substituting the arithmetic series formula, (A1)(ft) for correct substitution. Follow through from their first term and common difference in part (a).
= ($) 1380 (A1)(ft)(G2)
[3 marks]
(M1)(A1)(ft)
Note: Award (M1) for substituting the geometric series formula, (A1)(ft) for correct substitution. Follow through from part (c) for their first term and common ratio.
= ($)1280 (1283.05…) (A1)(ft)(G2)
[3 marks]