Question
A boat covers 13 km upstream in 52 min. If the speed of
the current is 6 km / h, then in how much time will it cover 40 km downstream?Solution
Let the speed of boat in still water =B and speed of stream =S Speed of boat in upstream =B-S=13×60/52 =15km/h S=6km/h B=21km/h Speed of boat in downstream =B+S=27km/h Take time cover 40km in downstream =40/27 hr.
Raj invested Rs.32000 in a business. After 7 months, Rohan joins him with an investment of Rs.P. If at the end of the year the profit is Rs.55000 and pr...
Karun and Varun invested Rs 2800 and Rs. x in a business. After 3 months, Karun added Rs 400 while Varun withdrew Rs 500. After a year out of a total pr...
‘P’ and ‘Q’ entered into a business by investing Rs. ‘y’ and Rs. ‘y – 400’, respectively. If their combined annual profit amounts to R...
P started a business investing Rs.15000. After 4 months, Q joined her with the capital of Rs.20000. After another 6 months, R joined them with the capit...
If the ratio of time periods of investment of A and B is 5:6, profit at the end of the year is Rs.100000 and A’s share in it is Rs.25000, then what is...
A and B invested Rs.5000 and Rs.10000 in a business respectively and after 3 months B withdrawn 50% of his initial investment and again after 5 months h...
'A' and 'B' started a business by investing Rs. 8,000 and Rs. 10,000, respectively. 'A' invested for 10 months and 'B' invested for 12 months. 'A' also...
Three friends A, B and C entered into partnership by investing Rs. 10X, Rs. (2X + 62) and Rs. (2000 – 5X) respectively. The ratio of the time period o...
G, L, and M initiated a Construction Materials business with investments of Rs. 4500, Rs. 2700, and Rs. 3600, respectively. After 3 months, G and M each...
- 'Ajay' and 'Bheem' entered in a partnership such that sum invested by 'Ajay' is 25% more than that by 'Bheem' while 'Bheem' invested his sum for 25% less t...
Relevant for Exams:
