Question

The cost of watering a field 250m long at 50 paise per square metre is rupees 15000.how much distance will a boy cover in going 3 times round this field?

Answer 1

area of field= 15000/50 m = 300m

lenght of field = 250 m
let the breadth be x m

so,

l×x = 300
or, 250x = 300
or, x = 300/250
or, x = 1.2

therefore, breadth = 1.2 m

perimeter = 2 (l+b)

= 2 (300+1.2) m
=602.4 m

the distance covered by boy = (602.4 × 3) m

=1807.2 m

Answer 2

Answer:2220

Explanation: length = 250m

(Convert 50 paise into ₹) = 50/100₹

For 1₹= 1x100/50 sq metre

For 15000₹ = 1x100/50 x 15000 = 30,000 sq metre

Area = length x Bredth

Breadth = 30000/250= 120m

Perimeter = 2 x ( 120+250)

= 740m

As, Boy cover in going three times - 3 x 740 = 2220

Answer= 2220