Question
Fresh grapes contain 80% water while dry grapes contain
20% water. How many kilograms of fresh grapes are needed to make 500 grams of dry grapes?Solution
ATQ,
Fresh grapes: 20% solid Dry grapes: 80% solid Let weight of fresh grapes be x grams Solid content remains constant: 0.2x = 0.8 * 500 0.2x = 400 → x = 2000 grams = 2 kg
In how many ways a Cricketer can make a Double century with fours and Sixes only?
In how ways can the selection be made so that a particular member is always included?
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "CAMPFIRE"?
A group consists of 12 boys and 7 girls. In how many ways can 5 boys and 3 girls be selected from the group?
In how many ways can 4 boys and 3 girls can be seated in a row so that they are in alternate position.
Find total number of ways in which the word “BOOKKEEPER” can be arranged.
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "RECLAIM"?
How many four-letter words without repetition having exactly two vowels can be formed by using the letters of the word "BALUSTER"?
How many ways can 8 women and 8 men be seated around a circular table where no two women can sit together?
How many 5-digit even numbers can be formed using the digits 0 to 9 if no digit is repeated?
Relevant for Exams:
