Question
Ravi earns 25% more than Rohit, and Rohit spends 75% of
what Ravi spends. The ratio of Rohit's savings to Ravi’s savings is 5:7. If Rohit’s expenditure is Rs. 4500, what is his income?Solution
Let the income of Rohit = Rs. x Income of Ravi = x × 125% = 1.25x Expenditure of Rohit = Rs. 4500 Expenditure of Ravi = (4500 / 75) × 100 = Rs. 6000 According to the question, (x – 4500) : (1.25x – 6000) = 5 : 7 ⇒ 7x – 31500 = 6.25x – 42000 ⇒ 7x – 6.25x = 42000 – 31500 ⇒ 0.75x = 10500 ⇒ x = Rs. 14000 Income of Rohit = Rs.14000
Out of 840 students in a college, the proportion of boys to girls is 3:4. In the midterm exam, 15% of boys and 10% of girls failed. How many students fa...
- An exam consists of two subjects: Computer and General Knowledge. Anita got 87 marks out of 95 in Computer and 72 out of 80 in General Knowledge. What is h...
In a school, the number of girls is 25% less than the number of boys. If the number of boys increases by 20% and the number of girls decreases by 10%, f...
A candidate who gets 24% marks fails by 12 marks but another candidate who gets 46% marks gets 14% more than the passing marks. Find the maximum marks.
M and N are two numbers. Their average is 160, and the sum of M and N is 120% of M. What percentage of M is the difference between M and N?
Meenu spent 10% of the salary on entertainment and 20% on makeup. She spent 20% of the remaining on the food and 50% of the remaining invested in mutual...
In a ward member election, a candidates secure 67% of the votes and is elected by majority of 5100 votes. The total number of votes polled is?
In a given years, A sold 2000 caps while B sold 55% more number of caps than A and C sold 20% less number of caps than B. Find the ratio between the num...
Person P allocated 35% of his salary to his son for school fees. From the remaining amount, he saved 40% in his bank account. The...
Rajesh spent 48% of his monthly income on food and 52% of the remaining of study. If total monthly savings (after spending on food and study) of Rajesh ...
