Question
βXβ invested Rs. 5000 in a business. βYβ joined
x months later with an investment of Rs. 4000. If at the end of the year, Yβs share in the profit is Rs. 3000 out of a total profit of Rs. 9000, find the value of x.Solution
According to the question,
(5000 Γ 12) : {4000 Γ (12 β x)} = (9000 β 3000) / 3000
Or, 60000 : {4000(12 β x)} = 6000 / 3000
Or, 60000 : {4000(12 β x)} = 2 : 1
So, 60000 Γ 1 = 2 Γ 4000(12 β x)
60000 = 8000(12 β x)
60000 = 96000 β 8000x
8000x = 96000 β 60000
8000x = 36000
x = 4.5 months
Salaries of A and B are in the ratio 5 : 7. If Aβs salary increases by 20% and Bβs salary decreases by 10%, what is the new ratio?
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