In 12 days, the earth picks up 1.8 x 10^8 kg of dust from the atmosphere. In how many days will I pick up 7.2 x 10^8 kg of dust ?
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Answered by
11
48 days
use unitary method it's so simple just divide and multiply
use unitary method it's so simple just divide and multiply
Answered by
32
Ans
1.8 x 10^8÷12=15000000
7.2 x 10^8 ÷15000000=48
Ans=48
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