1991 - WAEC Mathematics Past Questions and Answers - page 2
11
Find the equation whose roots are -2/3 and -1/4
A
12x2 + 11x + 2 = 0
B
12x2 - 11x + 2 = 0
C
x2 - 11/12x + 2 = 0
D
12x2 - 11x - 2 = 0
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12
Solve: 6(x - 4) + 3(x + 7) = 3
A
3/2
B
2/3
C
1/2
D
1/3
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13
If 2x + y = 7 and 3x - 2y = 3, by how much is 7x greater than 10?
A
1
B
3
C
7
D
10
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14
A cylinder of base radius 4cm is open at one end . If the ratio of the area of its base to that of its curved surface is 1:4, calculate the height of the cylinder
A
1cm
B
2cm
C
4cm
D
8cm
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15
A headmaster contributes 7% of his income into a fund and his wife contributes 4% of her income. If the husband earns N5,500 per annum (p.a) and the wife earns N4,000 (P.a), find the sum of their annual contribution to the fund
A
N1045
B
N605
C
N545
D
N490
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16
A car is travelling at an average speed of 80km/hr. Its speed in meters per second (m/s) is
A
13.3m/s
B
22.2m/s
C
133.3m/s
D
222.2m/s
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17
Mrs. Kofi sold an article for C7.50 instead of C12.75. Calculate her percentage of error, correct to one decimal place.
A
41.2%
B
18.3%
C
5.3%
D
1.7%
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18
Find the area of the enclosed region, PXROY correct to the nearest whole number
A
96cm2
B
116cm2
C
154cm2
D
192cm2
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19
Find the perimeter of the region
A
22cm
B
33cm
C
40cm
D
47cm
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20
The shaded portion shows the outer boundary
of the half plane defined by the inequality
of the half plane defined by the inequality
A
4x + 3y \(\geq\) 6
B
4x + 3y = 6
C
4x + 3y < 6
D
3y >6
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