One year ago the ratio of income of A & B is 3 : 5. The ratio of their last year income to current year income is 2 : 3 and 4 : 5. If their total current year income is Rs. 4300 then find their present year income.
Answer & explanation
Correct answer: option 1
Last Year : Current Year
A 2 : 3
B 4 : 5
*According to this ratio of last year income of A and B is 2 : 4 but according to question it should be 3 : 5
Therefor in this situation always follow two steps
a) Make it in the ratio 1 : 1
b) multiply by the new ratio in which we want to convert.
a) L. Y. : C.Y.
A 2 x (2 : 3
B 1 x (4 : 5
b) L.Y. : C.Y.
A 3 x 2 x (2 : 3
B 5 x 1 x (4 : 5
New Ratio
L.Y. : C.Y.
A -- : 18
B -- : 25
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Total 43R ⇒ 4300
1R = 100
Hence,
C.Y. income of A = 18R = Rs.1800
C.Y. income of B = 25R = Rs.2500