Question
An inlet pipe can fill an empty tank in 36 minutes
whereas an outlet pipe can empty the fully filled tank in 54 minutes. Find the time taken by both the pipes together to fill half of the empty tank.Solution
Let the total capacity of tank be 108 litres (LCM of 36 and 54)
Efficiency of inlet pipe = (108/36) = 3 litres/minute
Efficiency of outlet pipe = (108/54) = -2 litres/minute
Required time = (0.5 × 108) ÷ (3 - 2) = 54 minutes
M and N started a business by investing Rs.5000 and Rs.6000 respectively. After 7 months, M and N increased their investments by 60% and Rs.2100 respect...
‘A’ invested Rs. 2400 for ‘x’ months while ‘B’ invested Rs. 400 less amount than ‘A’ for (x + 4) months....
X and Y invested Rs. 2800 and Rs. 4200 respectively into a business. After 3 months, Z joined them with an investment of Rs. ‘x’. If the share of X ...
In a business there are two partners ‘P’ and ‘Q’. ‘P’ started the business with the capital of Rs. 24000 and after 3 months ‘Q’ joined h...
A, B and C hired a taxi for Rs. 850 and used it for 4, 6, 7 hours respectively. Hiring charges paid by B are:
A, B and C started a business with initial investments in the ratio 3:4:8, respectively. After one year A, B and C made additional investments equal to ...
P started a business with an investment of Rs.10000, after 6 months Q joined him with Rs.12000 and after another 6 months R joined them with Rs.15000. I...
If a sum of money is to be divided among A, B, C such that A’s share is equal to thrice B’s share and B’s share is 8 times C’s share then their ...
Priya and Arjun put in Rs. 2800 and Rs. 4200 respectively. They split 50% of the profit equally and distribute the rest according to their investments. ...
P started a business investing Rs.9000. After 3 months, Q joined her with the capital of Rs.12000. After another 6 months, R joined them with the capita...
Relevant for Exams:
