Question
The ratio of juice to soda in an 84-liter mixture (juice
+ soda) is 9:5. A certain quantity of this mixture is taken out and replaced with the same quantity of soda. If the final mixture has a ratio of 3:4 for juice and soda, respectively, determine the quantity of the mixture that has been taken out.Solution
ATQ, Initial quantity of Juice in the mixture = 84 × (9/14) = 54 liters Initial quantity of Soda in the mixture = 84 × (5/14) = 30 liters Let the quantity of mixture that has been taken out be ‘14m’ liters So, quantity of Juice that has been taken out = 14m × (9/14) = ‘9m’ liters Quantity of Soda that has been taken out = 14m × (5/14) = ‘5m’ liters According to question: {(54 – 9m)/(30 – 5m + 14m)} = (3/4) Or, 4 × (54 – 9m) = 3 × (30 + 9m) Or, 72 – 12m = 30 + 9m Or, 21m = 42 Or, m = 2 Quantity of mixture that has been taken out = 14 × 2 = 28 liters.
If 6 is to 216 as 2 is to:
- When 40% of a number is added to the number itself, the result is 21 more than the original number. What is the resulting number?
There are three numbers 'a', 'b' and 'c' (a < b < c) such that 'b' is equal to the average of 'a' and 'c'. 70% of 'c' is equal to 'a' and the difference...
- Find the smallest perfect square that is divisible by 10, 14, 18, and 21. What is the remainder when it is divided by 85?
Find the number of even numbers between 12 and 30.
Find a positive number which when increased by 26 is equal to 120 times the reciprocal of the number?
How many terms are there in the geometric progression 6, 18, 54, 39366?
The sum of two numbers is 30 while the difference between these two numbers is 6. What is 50% of the product of the two numbers?
- When a number is divided by 31, the remainder is 28. Find the remainder when twice the number is divided by 31.
22Â Â Â Â Â Â Â Â Â Â 44Â Â Â Â Â Â Â Â Â Â 176Â Â Â Â Â Â Â Â 1078Â Â Â Â Â Â 8448
...