Question
Sum of ages of 55 team members is 1220 years. The
average age of 20 of them is 19 years and the average age of another 15 of them is 20 years. Find the average age of the remaining members.Solution
Given, sum of age of 55 team members = 1220 years
Sum of age of 20 members = 20 × 19 = 380 years
Sum of age of another 15 members = 15 × 20 = 300 years
Remaining number of members = 55 – 20 – 15 = 20
Average age of remaining 20 members = {(1220 – 380 – 300)/20} = (540/20) = 27 years
What is the rate of interest (in %) if simple interest earned on a certain sum for the 3rd year is Rs 2,000 and compound interest earned in 2 years is ...
A company has a certain number of employees. Initially, 60% of the employees were assigned to the research department, 20% to the marketing department, ...
A student scored 75 marks in Mathematics, 85 marks in Science, and 90 marks in English out of a total of 100 marks in each subject. If the weightage of ...
A seller calculated his intended selling price at 6% profit on the cost of a product. However, owing to some mistake while selling, the units and tens d...
In a mayoral election between two nominees, 20% of the total votes were rejected as invalid. Out of the valid votes, 65% went to the winning candidate, ...
In an examination, Aman secured 40% more marks than Bittu, while Bittu scoredÂ
Suyash have total amount of Rs.2000 out of which, he spent 20% on food, 35% of the rest on travelling. Out of remaining amount he spends Rs.550 on misce...
- The price of fuel increases by 10%, and a person reduces his usage by 5%. Find the percentage increase or decrease in his expenditure.
A invested a certain amount in Debt and Equity mutual funds in the ratio of 3: 7 respectively. At the end of one year, he earned a total dividend of 30%...
In a given years, A sold 1900 caps while B sold 50% more number of caps than A and C sold 20% less number of caps than B. Find the ratio between the num...
