Bissoy.com
Doctors Medicines MCQs Q&A

The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.)-

The average pocket money of 3 friend A, B, C is Rs. 80 in a particular month. If B spends double and C spends triple of what A spends during that month and if the average of their unspent pocket money is Rs. 60, then A spends (in Rs.)- Correct Answer Rs. 10

According to the question,
Pocket money
$$\eqalign{ & \Rightarrow \frac{{A + B + C}}{3} = 80 \cr & \Rightarrow A + B + C = 240 \cr} $$
Unspent pocket money
$$\eqalign{ & \Rightarrow \frac{{A + B + C}}{3} = 60 \cr & \Rightarrow A + B + C = 180 \cr} $$
Spent pocket money = 240 - 180 = Rs. 60
Given:
$$\frac{B}{A} = \frac{2}{1}\,\,{\text{and}}\,\,\frac{C}{A} = \frac{3}{1}$$
    A     B     C   
Spent   1 2 3  = 6 units
6 units -------- 60
1 unit --------- 10
∴ A spent = 1 × 10 = Rs. 10

Related Questions

The average pocket money of 3 friends A, B and C is 80 in a particular month. If B spends double and C spends triple of what A spends during that month and the average of their unspent pocket money is 60. What amount does A spend?
The line chart given below shows the pocket money of six boys B1, B2, B3, B4, B5 and B6 in a month. Which of the following statement(s) is/are correct? I. Pocket money of B2 is 5.25 per cent less than the pocket money of B5. II. Pocket money of B4 is 6.25 per cent less than the pocket money of B5. III. Average pocket money of all the six boys is Rs. 2262.5
The first and the last parts of the sentence/paragraph are numbered 1 and 6. The rest of the sentences are split into four parts and A, B, C and D. These four parts are not given in their order. Read the sentence/paragraph and find out which of the four combinations is correct. 1. A friend in need is a friend indeed! A. A real friend stays by you through thick and thin. B. A true friend should be cherished and C. A true friend will be one who will stay by your side at all times. D. whose friendship should be safeguarded. 6. Losing a true friend is like losing a treasure.
A father has given Rs.20,000 to his son as a pocket money. Son spend (1/5) of his pocket money on school books, (3/5) of his pocket money on picnic. Find out how much money is left with him?
Rs. 150 of Amit’s pocket money was spent on a pair of shoes and Rs. 75 on a watch. The total amount spent was three-fourth of his total pocket money. What was the amount received by Amit as pocket money?
Carol, whose pocket money is 2/5 that of Brenda, says, 'The ratio of my pocket money to that of Alice is 4 : 13.' If the total pocket money they have is USD 81, how much does Brenda have? 
The money with two persons Anil and Sunil are in the ratio of 3 : 4. Anil can spends money in 5 days and Sunil can spends money in 6 days. Both spend money with their constant rate. After how many days will their money be in the ratio of 9 : 20?
Hotel Aditya has 10 single AC rooms, 5 double AC rooms and 18 non AC rooms. The fixed monthly rent of hotel is 150,000. The per day maintenance cost is Rs. 100 for double AC room, Rs. 75 for single AC room and Rs. 40 for non AC room. The per day charges are Rs. 600 for double AC room, Rs. 400 for single AC room and Rs. 250 for non AC room. In April 2003, the occupancy rate of non AC room was 50%, 70% of single AC room and 40% of double AC rooms. Find the profit/loss % for that particular month.
Given below are six sentences A-F, of which A and F are static and B-E have been jumbled. Pick the option that gives the correct order of the jumbled sentences. A. One day I went to school with four rupees in my pocket to pay the school fees. B. All through the day, the coins sat quietly in my pocket. C. So, I was told that the fees would be collected the next day. D. When school got over, the coins in my pocket began to speak. E. But the teacher who was to collect the fees was absent. F. They said that money was meant to be spent on good things like hot ‘jalebis’.
Questions below followed by three quantities. Find the relationship between them. Quantity I: In a class with a certain number of students if a teacher weighing 78 kg is added, then average weight of class is increased by 2 kg. If one more teacher weighing 66 kg is added, then the average weight of the class increases by 3.5 kg over the original average. What is the original average weight (in kg) of the class? Quantity II: The average age of 16 students and their teacher's age is 16 years. If the teacher's age is excluded, the average reduces by 2. What is the teacher's age? Quantity III: Average weight of three friends A, B and C is 46 kg. Another person D joins the group and now the average is 45 kg. If another person E whose weight is 6 kg more than D, joins the group replacing A, then average weight of B, C, D and E becomes 47 kg. What is the weight of A (in kg)?