Question

In a rectangular plot, 5 square flower beds of side (x+2) metres each have been laid (see figure given below).

a. Find a simplified expression for the perimeter of 5 square flower beds.
b. For a value of x=12 metres, calculate the total cost (in ₹) of fencing the flower beds at the cost of
₹500 per 100 metres.

Answer 1

Answer:

the total cost of fencing the flower beds at the cost of Rs. 50 per 100 ... In a rectangular plot, 5 square flower beds of side (x+2) meter each have been laid. ... Perimeter of one square flower bed =4×side=4×(x+2) m

Answer 2

Answer:

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Total quantity of petrol in the tin = 20 litres

Quantity of petrol lost, due to leakage = 3 litres

Now, quantity of petrol left in the tin = (20 – 3) = 17 litres

Therefore, percentage of petrol left in the tin = 17 / 20 × 100

= 17 × 5

We get,

= 85%

Thus, 85% of petrol is left in the tin