Question
Boat ‘A’ can cover 150 km in still water in 15
hours. In still water, if the ratio of the speed of boat ‘A’ to that of ‘B’ is 5:1 and the speed of stream is 3 km/hr then find the time taken by boat ‘B’ to cover the 60 km in downstream.Solution
Speed of boat ‘A’ in still water = 150/15 = 10 km/hr Speed of boat ‘B’ in still water = 10 × (1/5) = 2 km/hr Downstream speed of boat ‘B’ = 2 + 3 = 5 km/hr Time taken by boat ‘B’ to cover 60 km in downstream = 60/5 = 12 hours
- Kiran shared 288 toffees among his three friends Sonu, Monu and Tanu in the ratio 2:3:7 respectively. Find how many more toffees Tanu received than Sonu.
The ratio of prices listed for a bag and that of a belt is 2:1. In a sale, there was a discount of 40% on the belt. At the time of checkout, Ankit notic...
Total population of city P and Q is 2720 and 3300 respectively. If the ratio of number of males to females in city is P and Q is 5:3 and 3:2 respectivel...
The ratio of A's income to savings is 25:9, and B's expenditure is 60% of A's total income. If B's expenditure exceeds its savings by Rs. 3500, and A's ...
The average mark obtained by 150 candidates in a certain examination is 45. If the average marks of passed candidates are 55 and that of the failed cand...
- Four friends ('W', 'X', 'Y', and 'Z') went to dinner and received a bill of Rs. 1,800. They agreed that 'W' would pay half of what the other three paid tog...
If A: B = 2:3 and B: C = 3:4 find the value of (A+B): (B+C): (C+A).
The incomes of A and B are in the ratio of 3:2 and their expenditures are Rs. 14,000 and Rs. 10,000 respectively. If A saves Rs. 7000, then B's savings ...
Rohit, Manish, Suresh, and Arjun were playing a football match. The ratio of goals scored by Rohit and Manish was 6:9 respectively, while that between M...
Difference between the ages of A and B is same as the difference between the ages of B and C. The difference between the ages of A and C is 8 years. If ...
Relevant for Exams:
