# How many planks each of which is 3 m long, 15 cm broad and 5 cm thick can be prepared from a wooden block 6 m long., 75 cm broad and 45 cm thick?

Given,

Dimensions of one plank = 3m × 15cm × 5cm = 300cm ×15cm×5cm

Dimensions of wooden block = 6m × 75cm ×45 cm = 600 cm×75 cm×45cm

So,

No. of planks can be made = = = 90 planks

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