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Let cost of a mouse and a keyboard be x & y respectively. As per the question, 2x + 3y = 150 3x + 2y = 120 Solving the equation, For x and y, x = Rs. 12 & y = Rs. 42 Cost of 5 mouse and 2 keyboard = 5x + 2y = 5 × 12 + 2 × 42 = Rs.144
The ratio of the breadth to the length of a rectangular field is 2:3. The total cost of cutting the grass of the field at the rate of Rs 6 per m2
If the two adjacent sides of a rectangle are x cm and x – 10 cm and its perimeter is 76 cm then find its area?
The circumference of a circle is given as 220 m. What is the area of the circle? [Use π = 22/7]
