Question
βRβ and βSβ started a business by investing Rs.
5,000 and Rs. 8,000 respectively. βxβ months later, they admitted βTβ as a partner who invested Rs. 6,000. If at the end of the year, the profit share of βRβ was Rs. 7,500 out of the total profit of Rs. 20,000, then find the value of βxβ.Solution
Let βTβ invested for βmβ months. So,
x = 12 β m Ratio of profit shares of βRβ, βSβ and βTβ
= (5000 Γ 12) : (8000 Γ 12) : (6000 Γ m) = 60 : 96 : 6m ATQ, 7500 / 20000 = 60 / (60 + 96 + 6m) 3 / 8 = 60 / (156 + 6m) 156 + 6m = 160 6m = 24 m = 4 So, x = 12 β 4 = 8
A cube has edge 13 m. Find its length of diagonal, surface area and volume.Β
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A cube has edge 13 m. Find its length of diagonal, surface area and volume.