Loading [MathJax]/jax/output/HTML-CSS/jax.js

WAEC Mathematics Past Questions & Answers - Page 217

1,081.

Given that y = px + q and y = 5 when x = 3, while y = 4 when x = 2, find the value of p and q.

p = 1, q = 3

p = 1, q = 2

p = -2, q = 3

p = 3, q = -2

View answer & explanation

Correct answer is B

y = px + q

5 = 3p + q ... (i)

4 = 2p + q ... (ii)

(i) - (ii) : p = 1

∴∴ 5 = 3(1) + q

⟹⟹ q = 5 - 3 = 2

(p, q) = (1, 2)

1,082.

A man is four times as old as his son. The difference between their ages is 36 years Find the sum of their ages

45 years

48 years

60 years

74 years

View answer & explanation

Correct answer is C

Let the sons age be x. The father is 4x ∴ 4x - x = 36; 3x = 36; x = 12 The son is 12 years and the father is 12 x 4 = 48. The sum of their ages (12 + 48) years = 60years

1,083.

Evaluate $\frac{1}{2}+\frac{3}{4}of\frac{2}{5}\div 1\frac{3}{5}$

$\frac{15}{16}$

$\frac{11}{16}$

$\frac{49}{50}$

$3\frac{1}{5}$

View answer & explanation

Correct answer is B

$\frac{1}{2} + (\frac{3}{4} \text{ of } \frac{2}{5}) \div 1\frac{3}{5}$

= $\frac{1}{2} + (\frac{3}{4} \times \frac{2}{5}) \div \frac{8}{5}$

= $\frac{1}{2} + \frac{3}{10} \div \frac{8}{5}$

= $\frac{1}{2} + (\frac{3}{10} \times \frac{5}{8})$

= $\frac{1}{2} + \frac{3}{16}$

= $\frac{11}{16}$

1,084.

The nth term of a sequence is $2^{2n-1}$ . Which term of the sequence is $2^9?$

3rd

4th

5th

6th

View answer & explanation

Correct answer is C

$T_{n} = 2^{2n - 1}$

$2^{2n - 1} = 2^9$

$2n - 1 = 9 \implies 2n = 9 + 1$

$2n = 10 \implies n = 5$

The 5th term = 2 $^9$

1,085.

Evaluate $5\frac{2}{5}\times \left(\frac{2}{3}\right)^2\div\left(1\frac{1}{2}\right)^{-1}$

$\frac{8}{25}$

$\frac{12}{25}$

$3\frac{3}{5}$

$4\frac{1}{8}$

View answer & explanation

Correct answer is C

$5\frac{2}{5}\times \left(\frac{2}{3}\right)^2 ÷ \left(1\frac{1}{2}\right)^{-1}\\ \frac{27}{5}\times \frac{4}{9} \times \frac{3}{2}=3\frac{3}{5}$

WAEC Subjects

Literature in English

Islamic Religious Knowledge

Christian Religious Knowledge

Aptitude Tests

Personality Test

Logical Reasoning Questions and Answers

Nigeria General Knowledge Questions and Answers

Situational Judgement Questions and Answers

Quantitative Reasoning Questions and Answers

Microsoft Office Questions and Answers

Data Interpretation Questions and Answers

Typing Speed and Accuracy Test

Numerical Reasoning Questions and Answers

Spatial Reasoning Questions and Answers

Puzzles Questions and Answers

Abstract Reasoning Questions and Answers

Verbal Reasoning Questions and Answers

See all →

View latest jobs in Nigeria today