Question
A and B started a retail store with initial investments
in the ratio 8:9 and their annual profits were in the ratio 2:3. If A invested the money for 6 months, then for how many months did B invest his money?Solution
Suppose A invested Rs. 8x for 6 months and B invested 9x for y months then, ⇒ (8x × 6)/(9x × y) = 2/3 ⇒ y = (48x × 3)/(9x × 2) ⇒ y = 144x/18x ⇒ y = 8
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60% of 120 – ?% of 64 = 20% of 200
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What will come in place of the question mark (?) in the following expression?
(320 ÷ 8 + 22) × 4 = 60 + 40% of ?
Determine the simplified value of the given mathematical expression.
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