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Question 1 A manufacturer reduces the size of his machine of Material1 from 30" to 28" and that of Material2 from 24" to 23". He normally spends Rs.1440 for Material1 and Material2. 3/4th of the amount spent would be for Material1. How much will he save under the size of new size (Assuming that the costs incurred by the machines are directly proportional to their sizes)? a)Rs.85 b)Rs.87 c)Rs.86 d)Rs.88 Answer : b)Rs.87 Solution: The manufacturer totally spends Rs.1440 for both material 1 and 2. Out of this 3/4th is entirely for Material1. Amount spent on Material1 = 1440 x 3/4 = Rs.1080 i.e, he spent Rs.1080 for Material1 of 30" and he reduces 2". Size Amount 30" Rs.1080 2" ? Amount saved on Material1 = 1080 x 2/30 = Rs.72 Amount spent on Material2 = total amount - amount for Material1 = 1440 - 1080 = Rs.360. i.e., he spent Rs.360 for Material2 of 24" and he reduces 1". Size Amount 24" Rs.360 ...