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WAEC Mathematics 2025 Paper

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Question : 31

Total: 50

If log

_{10}

x = 2.3675 and log

_{10}

y = 2.9738, what is the value of x + y, correct to three significant figures

0.118
0.903
0.117
0.944

Solution:

log

_{10}

x = 2.3675 ⇒ x = 10

^{2.3675}

⇒ x ≈ 0.02331

log

_{10}

y = 2.9738 ⇒ y = 10

^{2.9738}

⇒ y ≈ 0.09414

∴ x + y = 0.02331 + 0.09414 = 0.11745 = 0.118 (3 s.f.)

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