Question
A mixture initially contains milk and water in the ratio
3 : 2. After adding 16 litres of milk and 16 litres of water, the ratio of milk to water becomes 10 : 7. What was the original quantity of the mixture?Solution
Let the amount of milk and water in mixture initially be ‘3x’ litres and ‘2x’ litres respectively.
According to question,
(3x + 16)/(2x + 16) = 10/7
21x + 112 = 20x + 160
21x – 20x = 160 – 112
x = 48
So, the initial quantity of mixture = 48 × 2 + 48 × 3 = 240 litres
- When is the expression 16x - 4x² - 48 greater than zero?
The smallest number 'Z' which when divided by 16, 24, and 48 leaves 3 as the remainder in each case. Find the value of ('4Z' + 7).
When the digits of a two-digit number are interchanged, the new number becomes 39 less than 150% of the original number. If the sum of the digits is 6, ...
Determine the value of 'a' such that the number 102a32 is divisible by 48.
Two numbers differ by 8, and their product is 240. Find the numbers.
A and B are positive integers. If A + B + AB = 65, then what is the difference between A and B (A, B ≤ 15)?
Let x = (726)245 – (437)458 + (333)335. What is the unit digit of x?
- Find the median of the following observations:
7, 8, 5, 4, 6, 10, 9, 12, 11, 13 Find the number of zeroes in the end of 160!