Question
Tap A is 50% more efficient than tap B. Both the taps
together can fill the tank in 9 hours. Find the time taken by tap C, which is 25% more efficient than tap B, to fill the tank alone.Solution
Let, time taken by tap B to fill the tank be x hours,
So, time taken by tap A to fill the tank = x/1.5 hours According to question,
1/x + 1/(x/1.5) = 1/9
1/x + 1.5/x = 1/9
x = (9 × 2.5) = 22.5 So, time taken by tap C to fill the tank = 22.5/1.25 = 18 hours
The average age of each of the 20 employees in an IT company is 20 years. When you include the age of the Team leader, the company's average age becomes...
The average expenditure of a man for the first 8 month is Rs.4000 and for the next 4 months is Rs.6000. If he saves 10000 in that year then find his ave...
20 students go for a picnic. 10 of them spent Rs. 64 each on their food and rest spent Rs.4 more than the average expenditure of all 20. What was the to...
- Rs. 5600 is divided among 'X', 'Y', 'Z', and 'W' in the ratio 4:6:3:7. Then, 'Y' gives 60% of the average of 'X' and 'W’s' amount to 'Z'. Find the averag...
The average age of a group of 20 students is 40 years. Two persons of age 44 years and 33 years, left the group and 2 persons of age 45 years and...
If average of first 12 numbers is (n – 23) and the sum of remaining number is 925. Find the value of ‘n’, if the average of 22 numbers is ‘n’....
There are three distinct numbers ‘m’, ‘n’ and ‘o’. If, m = 210, (m + n) = 510 and (o – n) = 60, then find the average of m, n and o.
...The average age of a group of 50 students is 16 years. If 3 students whose ages are 18 years, 26 years, and _____ years are replaced by 3 new students w...
The average of 24 numbers is 48. If 5 is added to each number, then the new average will be:
In an examination, the average marks obtained by the students is 40. After correcting the quantitative mistakes, the average of 60 students is reduced ...
