Question
The sum of the monthly incomes of βAβ, βBβ and
βCβ is Rs. 65000 which is 4 times the monthly income of βCβ. If βAβ spends 55% of his income while βBβ spends 80% of his income and the sum of their savings is Rs. 16800, then find the savings of βAβ.Solution
Monthly income of βCβ = 65000/4 = Rs. 16250 Let the monthly income of βAβ be Rs. x Therefore, monthly income of βBβ = Rs. (48750 β x) According to the question, 0.45x + 0.20(48750 β x) = 16800 Or, 0.25x = 7050 x = 28200 Or, savings of βAβ = 0.45x = Rs. 12690
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A cube has edge 13 m. Find its length of diagonal, surface area and volume.Β