Question
The ages of A, B and C are in the ratio 3:4:5 and the
sum of their ages is 72. Find the ratio of 12 years ago B’s age to C’s age after 12 years.Solution
Let the present age of A, B and C be 3x, 4x and 5x respectively. According to the question, => A + B + C = 72 => 3x + 4x + 5x = 72 => x = 6 B’s age 12 years ago = 4x – 12 = 24 – 12 = 12 C’s age after 12 years = 5x + 12 = 30 + 12 = 42 Required ratio = 12 : 42 = 2:7
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 ...
If four letter meaningful English words can be formed using the 4th, 5th, 6th and 8th letter of the word PHOTOGRAPHY, each letter is used only once, the...
If in the word TEENAGERS, all vowels are replaced by its next letter and all consonant is replaced by its previous letter, then all letters are arranged...
If in the number '4359672', 1 is subtracted from all the odd digits and 2 is added to all the even digits then all the numbers which are repeated are de...
 The position of how many alphabets will remain unchanged if each of the alphabets in the word ‘SERENITY’ is arranged in alphabetical order from l...
If Q denotes ‘×’; R denotes ‘-‘; T denotes ‘÷‘; and W denotes ‘+‘; then –
20 R...
 If all the vowels in the word ‘MASTERPLAN’ are changed to the next letter in the English alphabetical order and all the consonants remain the same...
In the given words, if the 3rd and 4th (from the left end) letters are interchanged and same is done with 5th and 6
How many such digits are there in the number ‘83495865427’ which will remain at the same position when they are arranged in the ascending order from...
If in the number '4735267843', '1' is added to all the odd digits and '2' is subtracted from the all the even digits then, all the digits are arranged i...
Relevant for Exams:
