0.045*1.9/(0.03*0.005*0.1) =

Question

\frac{0.045*1.9}{0.03*0.005*0.1} =

A. 5,700
B. 570
C. 57
D. 5.7
E. 0.57

PS20362

Ravixxx · Answer

0.045*1.9 ≈ 0.1

0,03*0,005*0,1 = 0.000015 = 15^{-6}

\frac{0.1}{15^{-6}} ≈ 5,700

You don't need to know the exact value, but only the correct decimal place (you can note that the answer choices change only in the decimal places).

Answer A

yashikaaggarwal · Answer

=> 0.045*0.19/0.03*0.005*0.1
=> 45/100*19/10
 --------------
 3/100*5/1000*1/10
=> 45*19*100/15
=> 5700

Answer is A

Posted from my mobile device

BrentGMATPrepNow · Answer

Since the answer choices are  very spread apart , we can be  very aggressive  with our estimation

\frac{0.045	imes1.9}{0.03	imes0.005	imes0.1} ≈\frac{0.05	imes2}{0.03	imes0.005	imes0.1}

≈\frac{0.05	imes2}{0.03	imes0.005	imes0.1}

≈\frac{0.1}{0.03	imes0.005	imes0.1}

≈\frac{1}{0.03 	imes 0.005}

≈\frac{1}{0.00015}

≈\frac{1}{0.0002}    close enough!

≈\frac{10,000}{2}

≈5000

The closest answer choice is A

Cheers, 
Brent

Fish181 · Answer

Multiply by 1000/1000 to make them all integers. Then the answer you receive multiply that by 1000 and that is your final answer.

DanTheGMATMan · Answer

🥱:

https://www.youtube.com/watch?v=d34XKyXRgSw

bumpbot · Answer

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0.0451.9/(0.030.005*0.1) =

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