Ratio & Proportion ( 7 Questions & Solutions )

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Q.1) The total value of a collection of coins of denominations Re.1, 50 paise, 25 paise, 10 paise and 5 paise is Rs.380/-. If the number of coins of each denomination is the same, then the number of one-rupee coins is how much?

Q.2) The students in three classes are in the ratio 2 : 3 : 5. If 40 students are increased in each class, the ratio changes to 4 : 5 : 7. What is originally the total number of students?

Q.3) Rs.750 is divided among A, B and C in such a manner that A : B = 5 : 2 and B : C = 7 : 13. What is A's share?

Q.4) By mistake, instead of dividing Rs.117 among A, B and C in the ratio 1/2 : 1/3 : 1/4, it was divided in the ratio of 2 : 3 : 4. Who gains the most and by how much?


Q.5) There are 200 Questions in a 3 hour examination. Among these questions, 50 are on Mathematics. It is suggested that twice as much time be spent on each Maths problem as for each other question. How many minutes should be spent on the 50 Maths questions?


Q.6) A certain restaurant has exactly 19 tables. Some of those tables are larger tables that can seat 6 people and others are smaller tables that can seat 4 people. If a total of 90 people can be seated at this restaurant, how many of the tables must be of the larger kind?


Q.7) 20 litres of a mixture contains milk and water in the ratio 5 : 3. After 4 litres of this mixture is sold, the milkman adds 4 litres of milk to this mixture. What will be the ratio of milk to water in the new mixture?

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