Question
Two pipes can fill a tank in 12 and 10 minutes
respectively. A waste pipe is used to empty the tank. All three pipes working together can fill the tank in 16 minutes. How much time is taken by the waste pipe to empty the full tank?Solution
Alternate Method: Let waste or leak pipe = C A B A+B+C Time 12 10 16 Let capacity of total tank = LCM (12,10 & 16) = 240 L Eff 20 : 24 : 15 So Leak can empty in 1 hr = A+B+C - (A+B) = 15 - (20+24) = -29 L Hence leak can empty the tank in = 240/29 hours
P, Q, and R invest ₹15,000, ₹20,000, and ₹25,000, respectively, to start a business. At the end of the year, the total profit is ₹60,000. P, as ...
A’, ‘B’ and ‘C’ started a business by investing Rs. 8,000, Rs. 9,500, and Rs. 7,500, respectively such that ‘B’ invested for 2 months more...
P and Q started a business by investing Rs.5000 and Rs.3000 respectively. After 4 months, Q increased his investment by a certain percentage such that a...
"Pawan" and "Qureshi" start a business by investing Rs. 'p' and Rs. 'q', respectively. After the first 6 months, "Pawan" raises h...
A and B started a business with the investments of Rs. (z-2000) and Rs. (z+4000) respectively. After 4 months of the start of the business, B left it an...
A, B and C enter into a partnership with a capital in which A’s contribution is Rs. 10,000. If out of a total profit of Rs. 2000, A gets Rs. 800 a...
A started a business with an investment of Rs 16,000. After 2 months B joins in with 5/8 of the amount that A invested and A withdraws Rs 4,000. After 2...
‘P’ and ‘Q’ invested Rs. 6,000 and Rs. 7,200 respectively to start a business. ‘Q’ withdrew his investment after 6 months. If the total prof...
A and B started a business by investing sum in the ratio 4:7 respectively for 6 and 8 months respectively. If annual profit earned by B is Rs.2100, then...
‘A’ started a business by investing Rs. 1,200. Eight months later, ‘B’ joined him by making an investment which is equal to 60% of the investmen...
Relevant for Exams:
