# Mathematics (2018) | Study Mode

Question 21
A
$$\frac{1}{11}$$
B
$$\frac{5}{22}$$
C
$$\frac{7}{22}$$
D
$$\frac{6}{11}$$

Question 22
A
2.4
B
4
C
24

Question 23
A
420Km
B
405Km
C
210Km
D
200Km
##### Explanation

since 1litre cost ?63

So ?900 is the cost of $$\frac{900}{63}$$ litres

= 14.2857litres of petrol

nbsp; The car uses 1 litre for 14km

So 14.2857 litres will be used for (14.2857 x 14)

= 200km

Question 24
A
126
B
72
C
54
D
28

Question 25
A
3
B
4
C
5
D
6
##### Explanation

In terms of distance, a circle has a total distance or perimeter of 2 or

Where r is radius and D is the diameter

So perimeter = $$\frac{22}{7}$$ x 100

= 314.2857m

To cover a distance of 1000m, he is going to round the circular track for $$\frac{1000}{314.2857}$$ = 3.18

It means it is on the number 4 round after the third round he is going to cover up to 1000m

Question 26
A
35.5
B
36.5
C
37.5
D
38.5

Question 27
A
45.5
B
46.5
C
47.5
D
48.5
##### Explanation

Question 28
A
8.8 x 10$$^{-1}$$
B
8.8 x 10$$^{-2}$$
C
8.8 x 10$$^{-3}$$
D
8.8 x 10$$^{3}$$

Question 29
A
N1,080.00
B
N2,400.00
C
N3,000.00
D
N3,600.00
##### Explanation

Question 30
A
$$\frac{15}{17}$$
B
$$\frac{9}{17}$$
C
$$\frac{8}{15}$$
D
$$\frac{12}{17}$$
##### Explanation

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