Question
If a tank can be filled by a tap in 16 hours, but due to
an outlet, it actually takes 4 hours longer to fill the tank, find the duration in which the outlet alone would empty the tank?Solution
Let tap ‘A’ fill the tank and tap ‘B’ empty the tank. Taking LCM of 16 and 20 = 80 Efficiency of A = 5 Efficiency of (A – B) = 4 Efficiency of B = 5 – 4 = 1 Tap B will empty the tank = 80/1 = 80 So, tap B will empty the tank in 80 hours.
How many such pair of letters is in the word "KERATINE", which has as many letters between them (both forward and backward) as in the English alphabeti...
If in ‘4798267583’ each digit at the odd place from the left end remain unchanged while each digit at the even place from the left end is increased...
How many such pairs of letters are there in the word ‘COMPLIMENT’ each of which has as many letters between them in the word as in English alphabeti...
In the word ‘PEDIATRICIAN’ all consonants are written as their preceding letter and all vowels are written as their succeeding letters. Now all le...
How many pairs of letters are there in the word ‘JACKFRUIT’ which has as many letters between them (both forward and backward) in the word as in the...
The current window that is being used is known as __________
When all the digits of the number ‘496878379683’ are arranged in increasing order from the left end, then what is the number obtained when third dig...
If in the number “756852733846321876”, the number at each odd position is decreased by 1, then how many such numbers are there in the final arrangem...
If each vowel of the word ' TECHNICAL' is changed to its next letter in the English alphabets and each consonant is changed to its previous letter of th...
How many such pairs of letters are there in the word ‘DISPLACED’ each of which has as many letters between them in the word (in both forwar...
