Last week’s answer: She will need 450g of beef, and 50g of garlic. 1/2 of 900g is 450g, which is how much beef she needs. She also needs 1/3 of 900g = 300g of potatoes and 1/9 of 900g = 100g of carrots. Therefore she needs 900g – 450g – 300g – 100g = 50g of garlic.
This week’s problem: There are five coins in a bag – one 10p, one 20p, one 50p and two £1 coins. What is the mean of these amounts?
The answer will be in next week’s weekly problem.