exam Maths Puzzle Numerical Ability

2x-13<_95

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exam Other Question

Multiply. (x/3 + 3/4)(3x/4 - 3/5)

Thanks. A buyer has spent Rs.30,151 on 550 units of a particular item.The first 100 units cost Rs.50 each;the next 150 units cost Rs.8,250 in total.The next batch cost Rs.11,200 in total and the final 100 cost Rs.x each.Find the value of x.