Question
The speed of a boat in still water increases by 4
km/hour after each hour. The speed of stream is 3 km/hour. If the boat travelled 60 km in 3 hours in downstream, then find time taken by the boat to cover 96 km distance with the initial speed of boat in downstreamSolution
Let the initial speed of boat in still water be = x km/hr (x + 3) + (x + 7) + (x + 11) = 60 3x + 21 = 60 3x = 39 x = 13 km/hr Required time will be = 96/16 = 6 km/hr
‘A’ invested Rs. 7500 for ‘x’ months while ‘B’ invested Rs. 1500 less amount than ‘A’ for (x + 4) months...
- Amit and Anil started a business jointly. Amit invested Rs. 12,000. Anil withdrew his investment after 8 months. If at the end of the year the profit was d...
Two partners A and B invested Rs 70,000 and Rs 50,000 respectively in a business. Both the partners distribute 75% of the profit equally and distribute ...
A, B and C enter into a partnership, A invest X + 6000, B invest 5X + 8000 and C invest X + 5000 for one year if B share is 6250 from total profit of 12...
Anil and Sunil together start a business with investment of Rs. 1500 and Rs. ‘x + 1300’, respectively. If the profit earned after 5 years is...
A started a business with an investment of Rs.40000. After few months B joined him with an investment of Rs.45000. If at the end of the year, they share...
Alok and Kajal started a business by investing Rs. 'X' and Rs. (X + 700), respectively. 20 months later, Kajal withdrew his entire investment. At the en...
P and Q together started a business with initial investment in the ratio of 1:5, respectively. The time-period of investment for P and Q is in the ratio...
'A' and 'B' invested Rs. 4200 and Rs. 3600 respectively in a business. After 6 months, 'B' reduced his investment by 50%, while 'A' increased his initi...
Three persons A, B and C invested different amounts in a business, which are in A.P. The amount invested by B is Rs. 2000 more than that of A. C investe...