Question
The average cost price of 18 pens (having equal cost
price) decreased by Rs.2, when one of the pen is replaced by a new pen having cost price of Rs.74. Find the cost price of the pen that was replaced.Solution
Let the cost price of each pen be Rs.x So, cost price of 18 pens = Rs.18x According to the question, => (18x – x + 74)/18 = x – 2 => 17x + 74 = 18x – 36 => x = 110 Therefore, the cost price of the pen that was replaced is = Rs.110
? = (597.98 ÷ (6.97 2.01 – 3.1)) × 12.9
In the given series, what will be come in place of blanks?
Series I: 13, _ P _, 89, 145, 229, 369
Series II: 287, _ Q _, 223, 194, 167, 14...
In the question, two equations I and II are given. You have to solve both the equations to establish the correct relation between x and y and choose the...
When 15 is added to 30% of a certain number, the result is equal to one-third of that same number. Determine the value of the number.
The following table shows the monthly sales of a company for the first five months of the year:
In a triangle, the angles are in the ratio 1:2:6. Determine the difference between the smallest and the largest angle.
Two individuals, A and B, started a business by investing ₹7,200 and ₹11,700, respectively. After 20 months, A withdrew his entire investment. At th...
Solve the inequality:
(3x – 4)/(x + 2) > 1
69 73 64 80 ? 91
The area of four walls of a room is 140 cm2. If the length and breadth of the room were equal and the height of the room is 7 cm, then what i...
Relevant for Exams:
