Level 3
Two different brands of detergent powder are on promotion in a supermarket. Ms Ong wants to buy 30 kg of detergent. How much will she save if she buys Brand B detergent powder instead of Brand A?
Level 3
Two different brands of detergent powder are on promotion in a supermarket. Ms Ong wants to buy 30 kg of detergent. How much will she save if she buys Brand B detergent powder instead of Brand A?
Level 3
Chris runs 100 metres for 5 times. The average time taken for his first three runs is 14.5 seconds. He aims to have an average timing of 12.8 seconds for his five runs.
What is the average time he needs to take for his 4th and 5th run in order to achieve his aim?
If he runs 3 seconds faster in one of the five runs, what would be his average time for the five runs?
Level 3
A tennis racket costs 3 times as much as a basketball. 1 tennis racket and 4 such basketballs cost $287.35. How much does the tennis racket cost?
