11-Plus Maths Quiz - Ratio 2 (Difficult) (Questions)

Ratios are an important part of the Eleven Plus maths exam and you will need to understand them if you want to do well. But you’ve come to the right place if you need more practice. This is the second quiz in our Difficult section on ratios.

We use ratios in a similar way to fractions. Both are ways to represent parts or portions of a larger number. For example, let’s say that John has 3 sweets and Jill has 2. We could show this as the ratio 3:2 or as the fractions 35 and 25. That’s because there are 5 sweets altogether. John has 3 of them and Jill has 2.

I hope that makes things clear. If not, don’t worry – you’ll get plenty of opportunity to practice in this quiz, and our others of ratios. Keep trying until you get all the questions right. Good luck!

1. 650 orders have been made for 3 products: TV sets, microwaves and fridges in the ratio 8:2:3 respectively. How many items of each product have been ordered?
[ ] 400 TV sets, 100 microwaves and 150 fridges
[ ] 80 TV sets, 20 microwaves and 30 fridges
[ ] 450 TV sets, 150 microwaves and 200 fridges
[ ] 160 TV sets, 40 microwaves and 120 fridges
2. What are the fractional parts of 7:4:11?
[ ] 711, 411 and 1111
[ ] 722, 422 and 1122
[ ] 13, 15 and 12
[ ] 1422, 822 and 2222
3. What are the fractional parts of the ratio 3:18 in their simplest form?
[ ] 16 and 66
[ ] 121 and 621
[ ] 17 and 67
[ ] 321 and 1821
4. How else can the ratio 1.5:2:1.2 be written?
[ ] 2:4:1
[ ] 10:15:8
[ ] 15:20:10
[ ] 15:20:12
5. How else can the ratio 2.5:1.25:7 be written?
[ ] 10:5:28
[ ] 10:4:28
[ ] 11:5:28
[ ] 10:5:24
6. Andrew, Beatrice and Clair earned £700 for a job. They shared it in the ratio 4:3:7 respectively. How much did each person get?
[ ] Andrew £300, Beatrice £200 and Clair £200
[ ] Andrew £300, Beatrice £250 and Clair £150
[ ] Andrew £200, Beatrice £150 and Clair £350
[ ] Andrew £350, Beatrice £150 and Clair £200
7. Anna, Brian and Charles are given 17 sweets to share. The sweets are given out in the ratio 12:10:12 respectively. How many sweets did each child get?
[ ] Anna 12, Brian 10 and Charles 12
[ ] Anna 6, Brian 5 and Charles 6
[ ] Anna 8, Brian 7 and Charles 8
[ ] Anna 3, Brian 4 and Charles 3
8. How else can the ratio 4:1.2 be written?
[ ] 3:10
[ ] 20:5
[ ] 20:7
[ ] 10:3
9. Adam, Beth and Carla are stamp collectors. Adam has 44 stamps, Beth has 68 and Carla has 76. What is the simplest ratio to express these amounts?
[ ] 11:17:19
[ ] 22:34:38
[ ] 44:68:76
[ ] 5:8:10
10. What are the fractional parts of the ratio 5:9:3?
[ ] 518, 918 and 318
[ ] 517, 917 and 317
[ ] 519, 919 and 319
[ ] 520, 920 and 320
11-Plus Maths Quiz - Ratio 2 (Difficult) (Answers)
1. 650 orders have been made for 3 products: TV sets, microwaves and fridges in the ratio 8:2:3 respectively. How many items of each product have been ordered?
[x] 400 TV sets, 100 microwaves and 150 fridges
[ ] 80 TV sets, 20 microwaves and 30 fridges
[ ] 450 TV sets, 150 microwaves and 200 fridges
[ ] 160 TV sets, 40 microwaves and 120 fridges
8 + 2 + 3 = 13 ∴ the fractional parts are as follows: TVs, 813 × 650 = 400; microwaves, 213 × 650 = 100; fridges, 313 × 650 = 150
2. What are the fractional parts of 7:4:11?
[ ] 711, 411 and 1111
[x] 722, 422 and 1122
[ ] 13, 15 and 12
[ ] 1422, 822 and 2222
7 + 4 + 11 = 22 which becomes the denominator in the fractional parts
3. What are the fractional parts of the ratio 3:18 in their simplest form?
[ ] 16 and 66
[ ] 121 and 621
[x] 17 and 67
[ ] 321 and 1821
3 + 18 = 21. This can be simplified by dividing by three to 1 + 6 = 7 which becomes the denominator in the fractional parts. Always try to simplify if it is possible
4. How else can the ratio 1.5:2:1.2 be written?
[ ] 2:4:1
[ ] 10:15:8
[ ] 15:20:10
[x] 15:20:12
1.5:2:1.2 = 15:20:12 (multiplying by 10). You need to find a number to multiply by which will make 1.5 and 1.2 into whole numbers
5. How else can the ratio 2.5:1.25:7 be written?
[x] 10:5:28
[ ] 10:4:28
[ ] 11:5:28
[ ] 10:5:24
2.5:1.25:7 = 10:5:28 (multiply by 4)
6. Andrew, Beatrice and Clair earned £700 for a job. They shared it in the ratio 4:3:7 respectively. How much did each person get?
[ ] Andrew £300, Beatrice £200 and Clair £200
[ ] Andrew £300, Beatrice £250 and Clair £150
[x] Andrew £200, Beatrice £150 and Clair £350
[ ] Andrew £350, Beatrice £150 and Clair £200
4 + 3 + 7 = 14 ∴ the fractional parts are as follows:
Andrew, 414 × £700 = £200;
Beatrice, 314 × £700 = £150;
Clair, 714× £700 = £350
7. Anna, Brian and Charles are given 17 sweets to share. The sweets are given out in the ratio 12:10:12 respectively. How many sweets did each child get?
[ ] Anna 12, Brian 10 and Charles 12
[x] Anna 6, Brian 5 and Charles 6
[ ] Anna 8, Brian 7 and Charles 8
[ ] Anna 3, Brian 4 and Charles 3
12:10:12 can be simplified by dividing by two to make 6:5:6. This ratio adds up to 17 so that is the number of sweets each child received
8. How else can the ratio 4:1.2 be written?
[ ] 3:10
[ ] 20:5
[ ] 20:7
[x] 10:3
4:1.2 = 20:6 (multiply by 5). This can be simplified to 10:3 by dividing by two
9. Adam, Beth and Carla are stamp collectors. Adam has 44 stamps, Beth has 68 and Carla has 76. What is the simplest ratio to express these amounts?
[x] 11:17:19
[ ] 22:34:38
[ ] 44:68:76
[ ] 5:8:10
A:B:C: = 44:68:76 = 11:17:19 (dividing by 4)
10. What are the fractional parts of the ratio 5:9:3?
[ ] 518, 918 and 318
[x] 517, 917 and 317
[ ] 519, 919 and 319
[ ] 520, 920 and 320
5 + 9 + 3 = 17 which becomes the denominator in the fractional parts