Question
The average expenditure of a man for the first 7 month
is Rs.5000 and for the next 5 months is Rs.8000. If he saves 12000 in that year then find his average monthly income.Solution
Total expenditure in first 7 months = 5000 × 7 = Rs.35000 Total expenditure in last 5 month = 8000 × 5 = Rs.40000 Total income of the man in a year = 35000 + 40000 + 12000 = Rs.87000 So average income in a month = 87000/12 = Rs. 7250
Find the total distance covered by boat in still water in 8 hours if the speed of boat in upstream and in downstream is 10 km/h and 15 km/h respectively?
A boat takes 7 hours to cover 259 km upstream and 9 hours to cover 477 km downstream. Find the time taken by the boat to cover 645 km upstream and 660 k...
Two boats A and B start towards each other from two places, 312 km apart. Speed of the boat A and B in still water are 14 km/h and 10 km/h respectively....
Ratio of still water speeds of three boats is 3:4:5. The first boat travels downstream, the second and third boats travel upstream. They travel in strea...
Find the total distance covered by boat in each upstream and downstream in 6 hours if the speed of boat in still water and speed of current is 15 km/h a...
The boat's speed in still water is 20% greater than the speed of the stream. If it takes the boat 4 hours more to travel 176 km d...
Ratio of speed of boat in downstream and speed of stream is 7:5, if speed of current is 5 km/hr, then find distance travelled (in km) upstream in 4 hours.
Speed of boat in downstream is 45% more than speed of boat in still water. If speed of stream is 9 km/h, then find the time taken by the boat to cover 8...
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 d...
Speed of a boat in still water to speed of boat in upstream is 7:4. If the boat can travel 450 km in downstream in 5 hours, then find the time taken by ...
Relevant for Exams:
