Question
A person purchased diesel at Rs. 5, Rs. 12 and Rs. 10
per litre in three successive years. If he spent Rs. 6000 each year on diesel, then find the approximate average cost (per litre) paid by him in the given three successive years.Solution
According to the question, Quantity of diesel purchased by him in 1 year = (6000/5) = 1200 litres Quantity of oil purchased in 2 year = (6000/9) = 500 litres Quantity of diesel purchased in 3 year = (6000/10) = 600 litres Total quantity of oil purchased in give three years = 1200 + 500 + 600 = 2300 litres Total amount spent on diesel in given three years = 6000 Ă 3 = Rs. 18000 Required average = 18000/2300 = 7.826 ~ Rs. 7.83
If all the prime digits of the number 2786989346 are written first (in increasing order) followed by even digits(in increasing order) and then odd digit...
How many pairs of letters are there in the word COMPARISONâ which has as many letters between them (both forward and backward) in the word as in the E...
If in the word âFRAGRANCEâ, all vowels are replaced by its next letter and all consonant is replaced by its previous letter, then all letters are ar...
How many pairs of letters are there in the word 'FREEZING' which has as many letters between them in the word (both forward and backward) as in the Eng...
If third letter from the left end of each word from each group is to be considered, then which among the following group of words can make at least one ...
How many pairs of letters are there in the word "PROSPECTUS" which has as many letters between them (both in forward and backward direction) in the wor...
If all the letters in the word âSHARINGâ are arranged in alphabetical order from left to right such that the vowels are arranged first followed by t...
If we arrange all the letters of the word âHESITATION in alphabetical order from the left end, then, how many letters will remain at same position aft...
How many such pairs of letters are there in the word âSUMMERâ that maintain their positional sequence as in the English alphabetical series (both fo...
If it is possible to make to make only one meaningful word with the first, second, fifth and seventh letters of the word âSTRAWBERRYâ, which of the...
