Question
30% of ‘x’ added to 70% of ‘y’ gives 140. If
‘y’ is 60 more than ‘x’, find the value of (2x – y)Solution
According to the question, 0.3x + 0.7y = 140…….. (1) And, y – x = 60……. (2) On solving equation (1) and (2), we get x = 100 and y = 160 Therefore, (2x – y) = 200 – 160 = 40
What is the unit digit of the sum of first 111 whole numbers?
In a two digit positive number, the digit in the unit’s place is equal to the square of the digit in ten’s place, and the difference between...
- Determine the remainder when
Which of the following is a prime number?
How many times I write digit ‘1’ in first hundred natural numbers?
- If the 4-digit number p89q is exactly divisible by 9, what is the least value of (p + q)?
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...
- 35% of 45% of 640 = z + 20.2, what is the sum of the squares of the digits in ‘z’?
Find the smallest integer greater than 100 which leaves a remainder 1 when divided by each of 2, 3 and 5.
Find the least number greater than 200 which leaves remainder 5 when divided by 12, 15, and 18.
Relevant for Exams:
