Question
Income of 'A' is Rs. 2,000 more than that of 'B'. Both
spend 30% of their respective incomes. If the savings of 'C' is 20% of his income and is equal to the difference between the savings of 'A' and 'B', then find the income of 'C'.Solution
Let the income of 'A' be Rs. 'x' Therefore, income of 'B' = Rs. (x − 2000) Difference between their savings = 0.70x − 0.70(x − 2000)
= 0.70x − 0.70x + 0.70 × 2000
= Rs. 1400 Therefore, income of 'C' = (1400/0.20) = Rs. 7,000
- The average marks of Karan in 5 different papers was calculated as 73. But it was later found that his marks in two subjects were wrongly entered as 80 and...
2 years ago, the average age of the family of 3 members is 13 years. A baby is born now; the average age of the family is same as before. Find the age o...
There are three numbers 'a', 'b' and 'c' such that average of 'a' and 'b' is 14, average of 'b' and 'c' is 16 and average of 'a' and 'c' is 30. Find the...
A car covers a distance of 60 km at a consistent speed. If the car's speed is increased by 8 km/h, it would take 2 hours less to travel the same distanc...
In a company of 36 employees, the average salary is ₹55,000. One employee earning ₹52,000 resigns, and 4 new employees with an average salary of ₹...
The average score of 'x' boys is (x + 5), and the average score of 30 girls is (3x - 10). If the combined average score of all students is 60, then find...
A person purchased diesel at Rs. 7, Rs. 10 and Rs. 14 per litre in three successive years. If he spent Rs. 3500 each year on diesel, then find the appro...
The average number of novels on historical, thriller and fantasy in a library is 195, and the average number of novels on historical and fantasy is 150....
A cricketer whose bowling average is 24.85, runs per wicket, takes 5 wickets for 52 runs and thereby decreases his average by 0.85. The number of wicket...
Average of 15 observations calculated by a student was 65 but when he again went through his observations he realised that he took value of three observ...
Relevant for Exams:
