Question
In a milk-water mixture, milk : water = 5 : 2. If 7
litres of water is added, the ratio becomes 5 : 3. Find the initial quantity of the mixture.Solution
ATQ, Let milk = 5x, water = 2x After adding water: water = 2x + 7 Given: 5x / (2x + 7) = 5/3 Cross-multiply: 15x = 10x + 35 5x = 35 ⇒ x = 7 Initial mixture = 5x + 2x = 7x = 49 litres
Which of the following function(s) is/are not present in the number keypad of keyboard?
If all the vowels of the word COMPUTER are replaced by 2nd succeeding letter and the consonants are replaced by 2nd preceding letter and then the lette...
- If in the number '65784953', '1' is added to all the even digits, then, which of the following digit is not repeated in the new number?
- If all the vowels of the word ‘WINTER’ are replaced by their immediate succeeding letters and all the consonants are replaced by their immediate preced...
If the positions of the first and fifth digits of the number ' 83591427' are interchanged, similarly the positions of the second and the sixth digits ar...
If all the vowels of the English alphabetical series are numbered as A-1, E-2, I-3, O-4, U-5 and the remaining consonants are numbered from 6–26 in t...
If each vowel of the word WITHOUT is changed to the previous letter of the English alphabets and each consonant is changed to the next letter of the Eng...
If in the word ‘COMPENSATION’, all the vowels are changed to second preceding letter and rest of the letters are changed to the third succeeding let...
How many such pairs of letters are there in the word ‘EMERGENCY’ each of which has as many letters between them in the word in forward and backward ...
When the odd digits in the number ‘742726574’ are decreased by 2 and the remaining digits are increased by 2, then what is the sum of 4th...
Relevant for Exams:
