SOLUTIONS for Test of Mathematics at 10+2 Level --- TOMATO OBJECTIVE PROBLEMS.Total 853 number of solutions.Complete OBJECTIVE PROBLEMS and SOLUTIONS of the sixteenth edition of Test of Mathematics at 10+2 Level Example Solution:Question: A salesman sold two pipes at Rs. 12 each. His profit on one was 20%and the loss on the other was 20%. Then, on the whole, he(a) Lost Re. 1(b) Gained Re. 1(c) Neither gained nor lost(d) Lost Rs. 2Solution :Let the cost price of the pipe on which he made profit = x.→ x + 20x/100 = 12→ 120x/100 = 12→ x = 12100/120→ x = 10Let the cost price of the pipe on which he lost = y.→ y – 20y/100 = 12→ 80y/100 = 12→ y = 12100/80→ y = 15Therefore, total cost price = 10 + 15 = 25Total selling price = 2*12 = 24So, he lost (25 – 24) = Re. 1Option (a) is correct.