Question
In a class of 70 students and 25 teachers, each student
got gifts that were 20% of total number of students and each teacher got gifts that were 10% of total number of students. How many gifts were there in total?Solution
Gifts received by each student = 20% of total number of students i.e. => 20/100 × 70 = 14 Gifts received by each teacher = 10% of total number of students i.e. => 10/100 × 70 = 7 Total Gifts = 70 × 14 + 7 × 25 = 1155
Determine the sum of the first 16 odd numbers.
A two-digit number has a sum of its digits equal to 12. Additionally, if 45 is subtracted from this number, the resulting number has its digits reversed...
A = (5/2) × B and C = (1/10) × A. If (A + B + C) = 255, then determine the value of (7C – B).
3245.34 + 923.5 + 23.5 =?
In a class, 1/3 of the students are girls and rest are boys. If 3/5 of the girls and 1/5 of the boys are absent, what part of the total number of studen...
On reversing its digits, a two-digit number becomes 78 less than 180% of the original number. Also, the difference between the digits is 2 (tens digit ...
The sum of the squares of three natural numbers is 342. These numbers are in the ratio of 3:5:2. Determine the difference between the largest and smalle...
When a number is increased by 20% then the number obtained is 72 less than thrice the original number. Find the original number.
This question is based on the following 3-digit numbers:
543, 769, 552, 342, 245
(Example: 697 – First digit = 6, second digit = 9, and ...
When a number is divided by 17, the remainder remains 6. Find the remainder obtained when the square of the same number is divided by 17.
