Question

Cost of fenuing a square lown is at rate of 1.50 per m² is
& 3000 - find the cost of ploughing the lawn at rate of 5.50 per
100 m²​

Answer 1

• Given cost of fencing in first case of. 1m²= ₹1.50

Now Let us assume the area be X

So ,A/Q

$= > x \times 1.50 = 3000 \\ \\ = > x = \frac{3000}{1.50} \\ \\ = > x = \frac{300000}{150} \\ \\ = > x = 2000$

Now. in second second case given per 100m²=₹5.50

So now applying unitary method to find the cost for fencing the same field at the rate of ₹

5.50 for per 100 m²

$100m ^{2} = 5.50 \\ \\ = > 1m ^{2} = \frac{5.50}{100} \\ \\ = > 2000m ^{2} = \frac{5.50 \times 2000}{100}.... \\ .(2000m ^{2} \: because earliar \: we \: have \: find \: that \: the \: total \: area \: of \: the \: field \: is \: 2000m )^{2} \: \: \\ \\ = > 2000m ^{2} = 110$

therefore the total cost for fencing the same field at the rate of 5.50 per 100m² is ₹110✓