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1). 2 ∶ 72). 4 ∶ 53). 5 ∶ 24). 7 ∶ 2 |
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Answer» If TOGETHER the three had 30 grapes more, each of them would have had 120 grapes on an average. $(\Rightarrow \frac{{60 + p + q + 30}}{3} = 120)$ ⇒ p + q = 270------- (1) If Shama gives her 15 grapes to Radha, she and Inaya have grapes in the ratio 7 ? 10. $(\Rightarrow \frac{{p - 15}}{q} = \frac{7}{{10}})$ ⇒ 10p - 150 = 7Q ∴ 10p - 7q = 150------- (2) Multiplying the first EQUATION with 7 and adding it with equation second : 7P + 7q + 10p - 7q = 2040 ⇒ 17p = 2040 ∴ p = 120 Putting the value of p in equation (1): ⇒ q = 150 ∴ p ? q = 4 ? 5 |
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