On a school trip the ratio of adults to children should be 1:4. How many adults would be needed for a group of 30 children?
8
7
9
A 150 ml bottle of perfume costs £3.80. A 450 ml bottle costs £9.99. How much do you save if you buy the bigger bottle?
£1.41
£14.10
£1.40
150 g of wholemeal flour is mixed with 600 g of white flour to make a loaf of bread. What is the ratio of wholemeal flour to white flour?
4:1
1:4
2:3
500 ml of concentrated fruit juice is mixed with 2.5 litres of water to make a breakfast drink in a hotel. What is the ratio of concentrate to water?
5:1
!:5
1:10
To make a jam you mix sugar with fruit in the ratio of 3:2. How much fruit do you use in making a 450 g of the jam?
270 g
180 g
90 g
To make a mortar to lay some bricks you mix sand with cement in the ratio of 3:1. How much cement do you use in making a 12 kg of the mortar?
9 kg
4 kg
3 kg
In making enough fruit punch mix for 12 glasses a woman uses 600 ml of orange juice. How much juice would she need to make 48 glasses?
2.4 litres
240 ml
24 litres
On a college course there are 36 male students and 60 female students. What is the ratio of men to women?
3:5
5:3
To make an alloy you mix copper with tin in the ratio of 3:4. How much copper do you use in making a 420 g of the alloy?
1.80 g
240 g
To make 10 litres of weed killer a gardener adds 120 g of powder. How much powder would he use if he only wanted to make 2 litres?
24 g
30 g
25 g