Question

In 8 days, the earth picks up (6.4 x 10⁷) kg of dust from the atmosphere. How much dust will it pick up in 15 days?
For class 8
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Answer 1

Answer :-

• $\sf \longrightarrow$ In 8 days , the earth picks up ( 6.4 × 10⁷ ) kg dust

• $\sf \longrightarrow$ In 15 days , the earth picks up (?) dust

• $\sf \longrightarrow = \frac{15 × \cancel{6.4 }^{\: \: 0.8}× 10⁷}{\cancel8}$

• $\sf \longrightarrow$ = 15 × 0.8 × 10⁷

• $\sf \longrightarrow$ = 27 × 10⁷

• $\sf \longrightarrow = \underline{\underline{2.7 × 10⁶ }}$

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