Question
A mixture (acetone and water) contains 30% acetone and
rest 70 litres water. How much acetone should be added to the mixture to make the ratio of acetone to water in the mixture 5:2?Solution
Three numbers are in the ratio 6:9:14. If the difference between the sum of the smallest and the largest number and the sum of the smallest and the seco...
 If the sum of two numbers is 45, and their difference is 9, what are the two numbers?
After swapping its digits, a two-digit number becomes 17 less than 200% of the original number. The sum of the digits is 8. Find the original number.
In a class, 2/5 of the students are girls and rest are boys. If 4/9 of the girls and 1/3 of the boys are absent, what part of the total number of studen...
A number gives a remainder 34 when divided by 391. What remainder will it leave when divided by 17?
How many two-digit even numbers can be formed using the digits 3, 4, 5, 7, and 8, ensuring that no digit is repeated?
How many whole numbers between 100 and 750 are multiples of both 18 and 24?
- Find the greatest common divisor (GCD) of (x 2 Â - 9x + 14) and (x 2 Â + x - 56).Â
Product of two consecutive positive even numbers is 840. Find the sum of the digits of the two numbers. Â
- Find the greatest 3-digit number which when divided by 11 or 16 leaves 3 as remainder.
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