Question
A jar contains a mixture of orange juice and water in
the ratio of 4:1. 75 litres of the mixture was taken out and 25 litres of water was added to it. If the water was 40% in the resultant mixture, what was the initial quantity of the mixture in the jar?Solution
Orange : water 4x : x Total = 5 x 75 litre of mixture taken out, Orange = 4x/5x × 75 = 60 Orange in mixture = 4x – 60 Water in mixture = x/5x × 75 = 15 Water = (x – 15) + 25 = x + 10 According to the question, (x+10)/(4x-60) = 40/60 6x + 60 = 16x – 240 10x = 300 ∴ x = 30 Initial quantity of mixture = 4x + x = 5x Initial quantity of mixture = 5 × 30 = 150 litres
What is the purpose of a weak entity in the ER model?
What data structure is commonly used to implement a graph's adjacency list?
What is a "token" in lexical analysis?
You have a standard deck of 52 playing cards. What is the probability of drawing a red card (heart or diamond) from the deck?
__________ is a subject-oriented, integrated, time-variant, nonvolatile collection of data in support of management decisions.
Which of the following is NOT a common type of firewall?
Which of the following is data type is NOT Valid in Python?
What is the main purpose of hashing in blockchain?
Which algorithm is commonly used for collaborative filtering in recommendation systems?
Which type of memory is faster to access and closer to the processor, providing temporary storage for frequently used data?
