Question
The speed of a boat in still water is 6 km/hr more than
that of the current. The time taken by the boat to cover 875 km downstream is 17.5 hours. Find the total time taken by boat to travel 650 km downstream and 45 km upstream.Solution
Therefore, downstream speed of the boat = 875/17.5 = 50 km/hr And, upstream speed of the boat = 6 km/hr Required time taken = (650/50) + (45/6) = 13 + 7.5 = 20.5 hours
The earnings of ‘X’, ‘Y’, and ‘Z’ are in the ratio 6:2:7 respectively. The average earning of the three friends is Rs. 9,500. If the average...
- Rohit spends 65% of his salary every month and manages to save Rs. 5,600. What is his monthly income?
A man invests ₹15,000 in a business. In the second year, he increases his investment by 20%, and in the third year, he reduces it by 25% of the second...
If 65% of income of ‘M’ is equal to 52% of income of ‘N’, then find the income of ‘M’ is how much percentage of income of ‘N’.
...The income of Mr. Chandu is Rs. 36,000, and Mr. Dinesh’s income is ‘p%’ less than Mr. Chandu. Mr. Dinesh saves Rs. 5,400, which is ‘p%’ less t...
Income of Priya is Rs. 25,000. She spends 14% on rent, 16% on clothing, 'a%' on food, 32% on others and saves the rest. If her savings is Rs. 5,000, fin...
The ratio of monthly savings to monthly expenditure of Arjun is 6:5 respectively. If his savings increase by 25% while expenditure decreases by 20%, his...
A Motorbike can be purchased on cash payment of Rs. 30000. But the same Motorbike can also be purchased on the cash down payment of Rs 7000 and the rest...
Nikhil spends x% of his salary on rent, then 30% of the balance on groceries, pays Rs. 6600 for transport, and saves Rs. 5496 from a total income of Rs....
- The monthly incomes of Anita and Sunita are in the ratio 3:4. Anita spends 80% of her income and manages to save Rs. 6000. What is the monthly expenditure ...
Relevant for Exams:
