Question
Tap ‘A’ and tap ‘B’ can fill a tank in 42 hours
and 30 hours, respectively. If both taps are opened together, then find the time after which tap ‘A’ must be closed so the whole tank can be filled in 20 hours.Solution
Let total capacity of the tank is 210 litres (LCM of 42 and 30) Quantity of water filled by tap ‘A’ in one hour = 210/42 = 5 litres Quantity of water filled by tap ‘B’ in one hour = 210/30 = 7 litres Let tap ‘A’ is closed after ‘x’ hours So, 12 × x + 7 × (20 – x) = 210 Or, 5x = 70 Or, x = 14 hours
Choose the best way to complete these passive voice sentence
Nothing _____ me,
Select the correct passive form of the given sentence.
He was eating a large pizza.
Two sentences are given below, with three words emboldened in each of them. Interchange the words between two sentences to form a grammatically and con...
Government wants a cut in the interest rates.
Select the correct passive voice of the given sentence.
Do not disturb me while I am preparing my project report.
The dormitories were being cleaned by some girls.
Select the correct passive/active form of the given sentence.
For a long time children believed the sun to be round
Select the correct passive form of the given sentence.
The Indian army has inducted several women officers in Infantry and Armoured Corps.
...Select the correct active \passive form of the given sentence.
He cannot think Shyam to understand these things.
The sentence has been given in Active/Passive Voice. Change the voice to Passive/Active.
The students are raising many questions
Relevant for Exams:
