Question

How many planks of size 2m×25cm×8cm can be prepared from a wooden block 5m long,70cm broad and 32 cm thick , assuming that there is no wastage?

Answer 1

$no. \: of \: planks = \frac{volume \: of \: board}{volume \: of \: plank} \\ = \frac{500 \times 70 \times 32}{200 \times 25 \times 8} = 28$