Question
The ratio of income and expenditure of a man is 9 : 7,
respectively. If the income and expenditure of the man are increased by 20% and 10% respectively, then find the percentage increase in savings.Solution
Let the income of the man be Rs. ‘9x’ So, expenditure = Rs. ‘7x’ So, savings = 9x – 7x = Rs. ‘2x’ New income = 9x × 1.2 = Rs. ‘10.8x’ New expenditure = 7x × 1.1 = Rs. ‘7.7x’ New savings = 10.8x – 7.7x = Rs. ‘3.1x’ So, required percentage increase
= {(3.1x – 2x) / 2x} × 100
= 55%
David’s current age is five years less than one-half of his uncle's present age. After 6 years, his age will be 25% of his uncle’s age. What will Da...
Determine the average current age of 'A' and 'B', given that six years ago, 'A' was 12 years younger than 'B', and twelve years from now, the ratio of t...
The average age of A, B, and C is 30 years. 5 years ago, the sum of the ages of A and B was 12 more than that of C. Find the present age of C.
Five years ago from now, ratio of ages of Aman and Bharat was 3:5, respectively. If 5 years hence from now, ratio of their ages will be 5:7, then find ...
A family includes father, mother, son and daughter. At the time of father’s marriage, the mother was 7 years younger than her husband. Now, the mother...
B is 3 years older than A and A is 7 years older than C. If the sum of the age of A and C is 27 years, then find the sum of the ages of all three.Â
The ratio of Amit’s and Bhanu’s ages will be 33:26 after 12 years. The current average age of Amit, Bhanu, and Charu is 53 years. Charu’s present ...
- The ratio of present ages of Ankit to that of Bhavesh is 3:5 while the ratio of present ages of Karan to that of Bhavesh is 2:5. If the age of Karan, 5 yea...
- The sum of present ages of Rina and Tina is 72 years. After 6 years, the ratio of their ages will be 5:7. Find the difference in their ages.
The present ages of 'Neha' and 'Priya' are in the ratio 3:4. Two years later, Neha’s age will be 30% less than Priya’s age. What is Neha’s current...
Relevant for Exams:
