Question
Ratio of speed of boat in downstream and speed of stream
is 9:5, if speed of current is 10 km/hr, then find distance travelled (in km) upstream in 6 hours.Solution
Let speed of downstream and speed of stream be 9x and 5x respectively. Speed of current => 5x = 10 => x = 2 km/hr Downstream speed = 9 × 2 = 18 km/h Speed of boat = 18 - 2 = 16 km/hr Upstream speed = 16 - 2 = 14 km/h Distance travelled upstream in 6 hr = 14 × 6 = 84 km
The ratio between two numbers is 7:8. If each number is increased by 9, the ratio between then become 10:11, find the difference between numbers.
The ratio of senior to junior employees in the company is 7:5. The ratio of male to female junior employees is 3:2, and the overall ratio of male to fem...
A box contains Rs. 930 in coins of Rs. 2, Rs. 5, and Rs. 8 denominations. The ratio of number of coins of Rs. 2, Rs. 5, and Rs. 8 is 6:5:7 respectively....
The ratio of the present ages of M and N is 6:5. After 15 years, the ratio of their ages will be 9:8. Find the ratio of their ages 10 years ago.
In a group of 800 participants planning a community event, some opted for the role of organizers in a Science Fair, while others chose to organize a Tal...
- A piggy bank contains ₹10, ₹5 and ₹2 coins in the ratio 3:4:6. If the total amount in the piggy bank is ₹620, how many ₹2 coins are there?
By mistake, instead of dividing Rs. 564 among P, Q and R in the ratio 1/3 : 1/4 : 1/5 it was divided in the ratio of 3 : 4 : 5. Who gains the most and b...
If A:B = 4:5 and C:B = 3:4, then determine the value of (A:B:C) .
- X, Y, and Z distribute a certain sum among themselves. The average share is Rs. 4860. X receives 12.5% more than Y, and 25% less than Z. What is the share ...
- If, ‘x’ varies directly as ‘y’, and when x = 56, y = 28, then find the value of ‘x’, when ‘y’ = 40.
