Question
A mixture of milk and water weighs 96 liters, where the
quantity of milk is 33⅓% of the quantity of water. How much milk needs to be added so that the quantity of water in the new mixture becomes 40% of the total volume of the resulting mixture?Solution
Let initial quantity of water be '3y' litres. Initial quantity of milk = (1/3) X 3y = 'y' litres So, 3y + y = 96 Or, 4y = 96 Or, 'y' = 24 Initial quantity of water = 3 X 24 = 72 litres Initial quantity of milk = 24 litres Let quantity of milk require be 'a' litres. Resultant quantity of mixture = (96 + a) litres So, [72 ÷ (96 + a) ] X 100 = 40 Or, 96 + a = 180 Or, 'a' = 84
- The product of three consecutive natural numbers is 46,620. What is the sum of these three numbers?
- 75% of 'A' equals (15/8) times 'B'. Determine the ratio A:B, assuming A and B are co-prime numbers.
A Student was asked to add 8 and subtract 5 from a number. By mistake, he added 5 and subtracted 8. If his answer is 11, what should be the correct answer?
- The product of two positive numbers is 720. If one of the numbers is four times the other, then find the difference between the given two numbers.
What is the smallest four-digit number that can be evenly divided by 20, 24, and 36?
Determine the unit digit of (23334 x 17724).
Find the value of 6 + 66 + 666 + 6666 +hellip;hellip;hellip;hellip;.. + n terms.
1. `(2)/(3) ((10 xx (10^(n)- 1))/9 - n)`
2.
- What is the smallest positive number which is divisible by 9, 18, and 27?
Each member of a picnic party contributed twice to their serial number. The total collection was Rs 3042. The (approximate) number of members present in...
Find the largest three-digit number that leaves '3', '4' and '5' as remainder when it is divided by '7', '8' and '9', respectively.
