Question
A candidate just passed by getting 150 answers correct
by attempting 225 of the total questions. Find the total number of questions in the examination if a candidate needs 60% marks. (All questions carry equal marks)Solution
Let the total number of questions be x. then, Percentage need in exam = 60% Correct answer = 150 percentage = (correct answer)/(total questions) 
100 60 = 100 x = 250 Alternate method Given that 150 ≡ 60% 1 ≡ % 250 ≡ 100% total number of questions = 250
The value of A’s car is depreciating by 30% every year whereas the value of his house is appreciating by 9% each year as compared to the previous year...
The cost of packaging of the oranges is 25% the cost of fresh oranges themselves. The cost of oranges increased by 30% but the cost of packaging decreas...
A candidate just passed by getting 100 answers correct by attempting 200 of the total questions. Find the total number of questions in the examination i...
The income of ‘A’ increases by 20% every year. If his income 2 years hence from now will be Rs. 86400, then find his income a year before from now.<...
- Priya's marks in Chemistry are 20% higher than her marks in Physics. The average of her marks in Chemistry, Physics, and Biology is 84. If she scored 87 in...
The income of a person is Rs.12000 and his expenditure is Rs.8000. In the next year his income and expenditure is increased by 10% and 20% respectively....
'S' spends 15% of his monthly income on travel, 45% on rent, and 10% of the remaining amount on groceries. He saves the rest in an investment scheme tha...
490 sweets were distributed equally among children in such a way that the number of sweets received by each child is 40% of the total number of children...
In a group of 100 people, 70 like coffee, 50 like tea, and 30 like both coffee and tea. How many people in the group do not like either coffee or tea?...
A man spends 23% and 10% of his monthly salary on rent and transportation, respectively. Out of the remaining money, he spends 31% on food and 46% on en...
Relevant for Exams:
