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
Correct Answer: Option D
Explanation
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