Question
A trader marks up the price of an article by 50% and
offers a discount of 20%. If the trader makes a profit of ₹150 on the article, what was its cost price?Solution
Let the cost price be ₹x. Marked price = 1.5x. Selling price after 20% discount = 1.5x × 0.8 = 1.2x. Profit = ₹150, so 1.2x − x = 150. 0.2x = 150 ⇒ x = 750. Ans. d
The average age of 4 children in a family is 30% of the average age of the mother and the youngest child. The total age of the father and the eldest chi...
- The average value of the property of Rina, Tanya and Kavya is Rs. 90 lacs. The value of the property of Rina is Rs. 30 lacs less than the value of the prop...
The average of a set of 's' numbers is 24. If 40 is added to the set, then the average of the set becomes 24.4. Find the value of '4 X (s - 14)'.
The average age of 24 children and their teacher's age are 21 years. If the teacher's age is excluded, the average reduces by 1. What is the teacher's age?
The average marks scored by 20 boys and 45 girls are 88 and 94 respectively. Find the average marks scored by all the students together. (Answer should ...
The average of two consecutive even numbers is 69. If the smaller number is increased by 10% and the larger number is decreased by 10%, then find the di...
The average of 7 numbers is 32. If one number 28 is removed, what is the approximate average of the remaining 6 numbers?
Average age of a class of 33 students is 14 years. Average age of the class is increased by 18 months if the age of the teacher is included. Find...
In a class of 35 students, the average marks is 72. The average marks of the boys is 75 and that of the girls is 68. Later, 5 new boys join the class. A...
If average of first 11 numbers is (n – 46) and the sum of remaining number is 1850. Find the value of ‘n’, if the average of 25 numbers is ‘n’...