Question
Pipe A can fill half of the tank in 6 hrs 2 min- Pipe B
can fill the same tank completely in 18 hrs 5 min while pipe C can empty the fully filled tank in 9 hrs, If all pipes are opened simultaneously then in how much time 80% of tank will be filled? (approximately)Solution
A can fill half of the tank in 6 hrs so, A can fill the full tank in 12 hrs B can fill the tank in 18 hrs C can empty the tank in 9 hrs Total capacity of tank = 36 unit (LCM of 12, 18 and 9) A can fill the tank in 1 hr = +3 B can fill the tank in 1 hr = +2 C can empty the tank in 1 hr = -4 Total tank filled in 1 hr = 3 + 2 – 4 = 1 unit  1% ≡ 36 unit 80% ≡ 36 × 80/100 = 29 units
The difference between the value of the number increased by 10% and the value of the number decreased by 20% is 72. Find the number.
- Income of 'M' is 30% more than that of 'N'. 'M' and 'N' save 50% and 40% of their respective incomes. If their expenditure difference is Rs. 600, what is t...
A sum of Rs. 36,800 was divided between 'A' and 'B' such that the amount received by 'B' was 30% more than that by 'A'. If 'A' and 'B' spent 10% and 25...
A girl spent 32% of her monthly income on clothing. Of the remaining, she spent on travel and food in the ratio of 5:3. If the difference of the income ...
In a job fair, 50% of the people are graduates, one fifth of them are post graduates and rest are double graduates. If three-fourth of the graduates, 60...
"Aman scored 220 marks and missed the passing mark by 44 marks. If Priya secured 330 marks, then by what percentage are Priya's m...
If the price of an essential good rises by 18% and the consumer decreases his consumption by 12%, what will be the percentage change in the expenditure?
The respective ratio of monthly income of A to monthly income of B is 5:6, and A’s saving is (100/6)% more than B’s saving. Find the expenditure of ...
A and B both spend 30% of their income together which is equal to Rs 26400. If income of A is 20% more than that of B, then find the income of B (in Rs)?
A student multiplied a number by 3/5 instead of 5/3, What is the percentage error in the calculation ?
...
Relevant for Exams:
