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 ?
Answers
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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