Question
The average of 7 numbers is 32. If one number 28 is
removed, what is the approximate average of the remaining 6 numbers?Solution
Total sum of 7 numbers = 7 Γ 32 = 224 Sum of remaining 6 numbers = 224 β 28 = 196 New average = 196 / 6 β 32.67 Answer: Approximately 32.67
A girl spent 30% of her monthly income on clothing. Of the remaining, she spent on travel and food in the ratio of 4:3. If the difference of the income ...
If x% of y is 100 and y% of z is 200, then find the relation between x and z.
...A bag contains 550 coins of 25p denomination and 1100 coins of 50p denominations. If 11% of 25p coins and 22% of 50p coins are removed, the percentage o...
Suresh spends 30% of his monthly salary on travel, 40% of the leftover on food, and saves the remaining amount. If he saves Rs. 1680, find out how much ...
In a village with 3500 residents, 65% are males and 50% of them can read and write. If 40% of the total population is literate, what is the percentage ...
- If 20% of βmβ equals 3 times 50% of βnβ, and βmβ is 85% of 600, what is the value of βnβ?
Ratio of males to females in city A is 2:3 and ratio of males to females in city B is 14:25. Number of males in city B are (x+10)% more than number of m...
Monthly income of P is Rs.20000 and his monthly savings is Rs.12000. If his monthly income is decreased by 40% and monthly expenditure is decreased by 3...
The income of βAβ increases by 35% every year. If the present income of βAβ is Rs. 45562.5 and his expenditure 2 years ago from now was Rs. 1200...
If the student scores 25% marks then he is failed by 150 marks. But if he scores 55% marks then he is passed with 180 marks. Find the passing percentage?