QueenDobby QueenDobby

18-09-2015
Mathematics

Answered

What is 7.8 × 105 m/h in kilometers per day?

A.

3.24 × 10^10 km/day

B.

3.24 × 10^8 km/day

C.

1.872 × 10^6 km/day

D.

1.872 × 10^4 km/day

Verified Answer :

18-09-2015

\(\sf\frac{7.8\times 10^5~m}{1~hr} \times \frac{1~km}{1000~m} \times\frac{24~hr}{1~day}= \frac{(7.8\times 10^5) \times 24~km}{1000~day}\\\\= \frac{18720000~km}{1000~day}=18720 \frac{km}{day} = 1.872 \times 10^4 \frac{km}{day}\)

Your answer is D

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