Question
A student multiplied a number by 4/5 instead of 5/4.
What is the percentage error in the calculation.Solution
Let the required number = (LCM of denominator 4 and 5) = 20 According to the question, Wrong answer = 4/5 Â Ă 20 = 16 Correct answer = 5/4 Â Ă 20 = 25 Required percentage of error = Â (25-16)/25 Â Ă 100 = 36%
In the word 'FACTORIZE' all consonants are written as their preceding letter and all vowels are written as their following letters. Now all letters are ...
If in the word âINCREAMENTâ all vowels are replaced with the preceding letter and all the consonant are replaced with the succeeding letter accordin...
How many pairs of letters are there in the word â DETERGENT â which has as many letters between them (both forward and backward) in the word as in t...
In the given number 854738327, one is added to all the even digits and one is subtracted from all the odd digits, then what is the sum of all the digits...
How many pairs of letters are there in the wordâ TRANSCRIPTâ which have as many letters between them in the word as in alphabetical series?
Which of the following letter will be 9th letter from the left end if the letters at odd positions are replaced by succeeding letter in the w...
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...
If the consonants of the following words are arranged first, followed by the vowels as per the English alphabetical order and then the consonants are ch...
If in the number '526215743', 1 added to all the odd numbers, then what is the sum of the digits which are repeating more than two times in the new num...
Each vowel in the word "NERVOUS" is changed to the following letter in the English alphabetical series and each consonant is changed to the previous let...
