WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!

A father decided to give 20% of his monthly income to his three children as...

Mathematics
JAMB 2005

A father decided to give 20% of his monthly income to his three children as their monthly allowance. The eldest child got 45% of the allowance and the youngest got 25%. How much was the father's monthly income if the second child got  ₦ 3,000?

  • A. ₦33,000
  • B. ₦45,000
  • C. ₦50,000
  • D. ₦60,000
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Mobile App 2025 - Free Download
JAMB CBT Software 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
Correct Answer: Option C
Explanation

To find the father's monthly income, we follow these steps:
Let \( I \) = Father's monthly income, \( A \) = Total allowance.
The total allowance is given by:
\(A = 0.2 I\)
The second child receives 30% of the allowance:
\(0.3 A = 3000\)
Solving for \( A \):
\(A = \frac{3000}{0.3} = 10000\)

Father's Income:
Now, substituting \( A \) into the equation for income:
\(0.2 I = 10000 \implies I = \frac{10000}{0.2} = 50000\)
The father's monthly income is: ₦50,000

There is an explanation video available below.


Report an Error Ask A Question Download App
JAMB CBT Mobile App 2025 - Free Download
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Software 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076

Explanation Video

JAMB CBT Software 2025 - Free Download
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Mobile App 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076

Contributions ({{ comment_count }})

Please wait...

{{ settings.no_comment_msg ? settings.no_comment_msg : 'There are no comments' }}

Quick Questions

Post your Contribution

Please don't post or ask to join a "Group" or "Whatsapp Group" as a comment. It will be deleted. To join or start a group, please click here

{{ quote.posted_by.display_name }}
{{ settings.form_textarea_description }}
 
JAMB CBT Software 2025 - Free Download
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Mobile App 2025 - Free Download
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
WAEC Past Questions, Objective & Theory, Study 100% offline, Download app now - 127076
JAMB CBT Mobile App 2025 - Free Download
JAMB CBT 2025 - Candidates, Schools, Centres, Resellers - Get Ready!
JAMB CBT Software 2025 - Free Download