JAMB - Mathematics (2014 - No. 4)
A man donates 10% of his monthly net earnings to his church. If it amounts to N4,500, what is his net monthly income?
N40,500
N45,000
N52,500
N62,000
解释
Let;
M = Man monthly net earnings
Then;
\(\text{N4500} = \frac{\text{10%}}{\text{100%}} \times M \)
\(M = \frac{\text{N4500} \times \text{100%}}{\text{10%}} \)
M = N45,000
M = Man monthly net earnings
Then;
\(\text{N4500} = \frac{\text{10%}}{\text{100%}} \times M \)
\(M = \frac{\text{N4500} \times \text{100%}}{\text{10%}} \)
M = N45,000