Grade 11 - More exercises : Answers.
Rate, ratio and proportion.
2
2
4
8
13
1.1 ----
1.2 ------
1.3 ----
1.4 ------
1.5 ------
3
5
7
13
23
2.1 Peter gets 15 and John 20.
2.2 A gets R424 and B gets R954.
2.3 A gets R9 107, B gets R6 505 and C gets R2 602.
2.4 C gets R69,36 and D gets R254,32
2.5 P gets 40 and Q gets 56 oxen .
2.6 R gets 196, S gets 112 and T gets 56 sheep.
3.1 A : B : C = 6 : 5 : 3
3.2 A gets R20 829, B gets R17 357,5 and C gets R10 414,5
3.3.1 A : B : C = 24 : 20 : 13
3.3.2 A gets R30 702 , B gets R25 585 and C gets R16 630,25.
4.1 John : Mike = 9 : 15
4.2 A : B : C = 8 : 5 : 3
5.1 102,5 kg
5.2 R1 323
5.3 34,1 m
5.4 21,3 kg
5.5 R202,5
5.6 19 litre.
6. 24 boys and 21 girls.
7.1 b : g = 23 : 22
7.2 b : g = 10 : 13
7.3 There are now 24 boys and 20 girls. 1 boy was admitted and 2 girls left.
8. There are 18 green, 20 yellow and 48 sweets in total.
9.1 N : P : K = 3 : 2 : 1 and 22% of the total mass is the mass of the nutrients.
9.2 Total mass of nutrients in bag = 2,2 kg.
9.3 Mass of N = 1,1 kg , mass of P = 0,73 kg and mass of K is 0,37 kg.
10.1 90 km/h = 25 m/s
10.2 100 m
10.3 The car travels at a lower speed because it takes longer to travel the same distance.
10.4 400 m in 12 s, i.e. 120 km/h.
10.5 150 m
11. 4 litres.
12. 36,5 m²
13. No, it will only cover 19,32 m²
14. 50,879 litres
15.1 36 minutes = 36/60 hours = 0,6 hours.
15.2 370,5 km
15.3 4,26 hours.
16.1 4,29 days
16.2 2,5 days
16.3 4,28 men, i.e. 4 men
16.4 15 men
17.1 4 sweets
17.2 20 sweets
17.3 10 children
17.4 40 children.