Direction (1-5): Study the following table and answer the questions that follow:
Year |
Ratio of Investiment |
Period of Investiment(Months) |
Totla Profit |
P |
Q |
R |
2012 |
4 : 3 : 5 |
4 |
6 |
- |
20800 |
2013 |
- : 3 : - |
8 |
5 |
6 |
39650 |
2014 |
5 : 4 : - |
3 |
5 |
5 |
- |
2015 |
- : - : 4 |
- |
- |
4 |
22550 |
2016 |
3 : - : 5 |
4 |
7 |
6 |
14700 |
1.In 2012, if out of the total profit, R got Rs 9750 as his share, what is the number of months for which R invested his money?
A 7 months
B 8 months
C 6 months
D 4 months
E 5 months
Answer: Option C
Explanation:
Ratio of share of profit of P : Q : R is
4 × 4 : 3 × 6 : 5 × x
16 : 18 : 5x
So [latex]\frac{5x}{(34 + 5x)}[/latex] × 20800 = 9750
Solve, x = 6 months
2. In 2013, if out of the total profit, P and R got a share of Rs 10,400 and Rs 19,500 respectively, what is the ratio of investment of P, Q and R respectively?
A. 3 : 3 : 5
B. 4 : 3 : 2
C. 2 : 5 : 5
D. 2 : 3 : 5
E. 2 : 5 : 3
Answer: Option D
Explanation:
x × 8 : 3 × 5 : y × 6
8x : 15 : 6y
So [latex]\frac{8x}{(8x + 15 + 6y)}[/latex] × 39650 = 10400
Solve, 225x – 60y = 150
15x – 4y = 10……………………………………(1)
Also
[latex]\frac{6y}{(8x + 15 + 6y)}[/latex] × 39650 = 19500
Solve, 61y = 75 + 40x + 30y
40x – 31y = -75………………………………….(2)
Solve equations (1) and (2)
x = 2, y = 5
So ratio of investment is x : 3 : y = 2 : 3 : 5
3. In 2014, out of the total profit, Q got Rs 12,000 as his share. R invested Rs 3600. If ratio of share of R in total profit to total profit is 3 : 10, find the total profit.
A. Rs 40, 000
B. Rs 35, 000
C. Rs 45, 000
D. Rs 50, 000
E. Rs 30, 000
Answer: Option E
Explanation:
In 2014, P invested Rs 5x, Q – 4x and R 3600
So ratio of share of profits of P, Q and R:
5x × 3: 4x × 5 : 3600 × 5
3x : 4x : 3600
Let total profit = Rs y
So [latex]\frac{4x}{(7x + 3600)}[/latex] × y = 12000………………………(1)
[latex]\frac{xy}{(7x + 3600)}[/latex] = 3000
Also,
[latex]\frac{[\frac{3600}{(7x + 3600) }× y]}{y}[/latex] = [latex]\frac{3}{10}[/latex]
y gets cancelled
Solve, x = 1200
Put in (1)
Solve, y = Rs 30, 000 = total profit
4. In 2015, P and Q invested Rs 3900 and Rs 2600 respectively. Also, P and Q invested for the same number of months. If the difference in the shares of P and Q out of total profit is Rs 2750, find the ratio of number of months of investment of P to the investment of R.
A. Other than given in options
B. 2 : 265
C. 1 : 260
D. 1 : 1040
E. 2 : 1045
Answer: Option D
Explanation:
Let investment of R is 4x, and months of investment of P = Q = y months
So ratio of profit share of P : Q : R is
3900×y : 2600×y = 4x×4
975y : 650y : 4x
So [latex]\frac{(975y-650y)}{(975y + 650y + 4x)}[/latex] × 22550 = 2750
[latex]\frac{325y}{(1625y + 4x)}[/latex] = [latex]\frac{2750}{22550}[/latex]
1625y + 4x = 2665y
4x = 1040y
So [latex]\frac{y}{4x}[/latex] = [latex]\frac{1}{1040}[/latex]
5. The total investment of P, Q, and R in 2016 is Rs 16,800. If a difference in shares of the profit of Q and P is Rs 5250, find the investment of Q.
A. Rs 3600
B. Rs 7200
C. Rs 6000
D. Rs 4800
E. Rs 2400
Answer: Option B
Explanation:
Ratio of share of profit of P : Q : R is
3×4 : x × 7 : 5 × 6
12 : 7x : 30
So [latex]\frac{(7x - 12)}{(7x + 42)}[/latex] × 14700 = 5250
(7x - 12) × 14 = (7x + 42)× 5
98x – 168 = 35x + 210
Solve, x = 6
So ratio of investments of P : Q : R is 3 : x : 5 = 3 : 6 : 5
So investment of Q = [latex]\frac{6}{(3 + 6 + 5)}[/latex] × 16800 = Rs 7200