Question
A shopkeeper raises the price of
a watch by 20%, followed by another increase of 30%. After offering a 25% discount, he makes a profit of ₹68. What should be the selling price of the watch if the shopkeeper wants to achieve a profit margin of 40%?Solution
ATQ,
Let the cost price of the watch be Rs. '100x' ATQ; 100x × 1.2 ×1.3 × 0.75 = 100x + 68 Or, 117x = 100x + 68 Or, 17x = 68 So, x = 4 So, cost price of the watch = 4 ×100 = Rs. 400 So, selling price of the watch when sold at 40% profit = 400 × 1.4 = Rs. 560
The age of person A (y+3) years ago and the age of person B (y+4) years from now are in the ratio 2:3.
It is also given th...
- The ratio of the ages of a teacher and a student is 5:2, respectively. If the difference between their ages is 18 years, then find the age of the student.
The average age of Rohit’s parents is 42 years. The ratio of his father and mother’s age is 4 : 3 respectively. Find his mother’s age?
- The present ages of ‘X’ and ‘Y’ are in the ratio 7:9. After 4 years, their ages will be in the ratio 11:13. What was X’s age 6 years before now?
Sum of the present ages of A, B, C and D is 70 years. After 5 years ratio of their ages is 5:4:4:2. What is C’s present age?
The joint average age of three siblings - Tara, Uday, and Vini - is 26 years. The ratio of Vini's to Waleed's current ages is 7:8, and Uday's age is 25%...
Present ages of 'A' and 'B' are in the ratio 3:5, respectively. If B's age, 14 years hence from now will be 2 times of A's age, 8 years ago from now, th...
The current combined age of Chris, Kane, and Root is 56 years. Root's current age is 20 years. The age ratio between Chris and Kane is 1:2. If Stokes, w...
The current age of Derek is twice that of Eve. 7 years from now, Derek's age will be 1.5 times the age of Fred at that time. If Eve is 5 years younger t...
Present ages of ‘A’, ‘B’ and ‘C’ are in the ratio 8:9:12, respectively. If present average age of ‘A’ and ‘C’ is 20 years, then find...
Relevant for Exams:
