Question on: JAMB Mathematics - 2007
The sum of the ages of Musa and Lawal is 28 years. After sharing a certain sum of money in the ratio of their ages, Musa gets N600 and Lawal N800. How old is Lawal?
A
14 years
B
20 years
C
12 years
D
16 years
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Correct Option: D
M + L = 28,
M : L = 600 : 800
= 3 : 4
(\frac{M}{L}) = (\frac{3}{4}) (\to) M = (\frac{3}{4})L
(\frac{3}{4})L + L = 28
(\frac{7L}{4}) = 28
L = (\frac{4 \times 28}{7})
= 16
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