Question
Speed of a boat in still water is 25% less than its
downstream speed. If the upstream speed of the boat is 24 km/h, find the downstream distance covered by the boat in 150 minutes.Solution
Let the speed of boat in still water be 'v' km/h and speed of stream be 'y' km/h
v = 0.75 × (v + y)
Or, 4v = 3v + 3y
Or, v = 3y
Upstream speed of boat = 3y − y = 2y km/h
So, 2y = 24
Or, y = 12
Downstream speed of boat = 3y + y = 4y = 4 × 12 = 48 km/h
Required distance = 48 × (150 ÷ 60) = 120 km
Assuming each girl costs the school ₹450 annually and each boy costs ₹500, calculate the total annual cost for School P. Then determine what percent...
By Club factory, if the total number of ordered placed was 15% more than Myntra, then what was the ratio of the order placed by Jabong to order delivere...
If the number of cars produced by Company P increased by 20% in 2023 compared to 2022, how many cars would be produced by Company P in 2023?
The total number of children visiting Kanha National Park is approximately what percent of number of children visiting Indravati National Park?
The given table shows the number (in thousands) of cars of five different models A, B, C, D and E produced during Years 2012-2017. Study the table and a...
What is the difference between the total number of orders who were not delivered by Jabong and Myntra together and that of who were not delivered by Fl...
What is the respective ratio between the total number of tourists from Russia and South India together going to Meghalaya and the total number of touris...
What is the difference between adult female visitors and child female visitors in the month of November, 2016 ?
Find the ratio between the number of children visiting Buxa Tiger Reserve and Betla National Park together.
What is the average number of cars produced by Company Q from 2018 to 2022?
Relevant for Exams:
