A dripping tap drips 12 kg of water every day. According to this calculation, it will waste () kg of water in the first quarter of 2011
First quarter = 12 × (31 + 28 + 31) = 1080kg
A dripping faucet loses 12 kg of water every day. According to this calculation, it will waste () kg of water in the first quarter of 2009
First quarter = 31 + 28 + 31 = 90 days
Water = 90 × 12 = 1080 kg