Question
Profit on selling 40 pens equals selling price of 12
books while loss on selling 40 books equals selling price of 16 pens. Also profit percentage equals to the loss percentage and cost of a pen is half of the cost of a book. What is the ratio of selling price of pen to the selling price of a book?Solution
c=2a Profit = 40(b-a) = 12d Loss = 40(c-d) = 16b Profit% = 12d/40a × 100 Loss% = 16b/40c × 100 Since, the percentage values are equal Therefore, 12d/40a  ×100 = 16b/40c  ×100 3d/10a=  4b/10c 3d/a  =  4b/2a Since c = 2a b/d  =  3/2Â
PQ is a line of length 18 cm. A point R is placed such that PR = 5 cm. If PR is increased by 40%, what percent does QR decrease?
The income of ‘A’ increases by 26% every year. If the present income of ‘A’ is Rs. 25401.6 and his expenditure 2 years ago from now was Rs. 1400...
In a college election a candidate who got 40% of the total votes polled was defeated by 126 votes. Assuming that there were only two candidates in the e...
Monthly income of Aisha and Tom is Rs. 75,200 and Rs. 82,000 respectively. Aisha spends 13%, 18%, and 22% on house rent, food, and education of children...
A number is first increased by 55%, and then decreased by 35%. What is the net percentage change in the original number?
A person spent 25% of his monthly income on food and 62% of the remaining on rent. If amount spent on rent is Rs 930, then find the amount spent ...
- In a company of 6000 employees in 2022, 70% were engineers and the rest were managers. In 2023, if the number of engineers increased by 20% and the number ...
- If 30% of 'x' is equal to 60% of '90', then find the value of 'x'.
‘X’ owns 40% less pens than ‘Y’. ‘Y’ owns 50% more pens than ‘Z’. By what percentage are the pens with ‘X’ less than those with ‘Z...
The income of Anand is 20% more than the income of Mayank and the income of Radhika is 60% of the combined income of Anand and Mayank. By what percentag...
Relevant for Exams:
