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Fraction/Ratio

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by BTGmoderatorRO » Fri Dec 29, 2017 9:00 am
Of the following, which is the closest approximation of $$\frac{50.2\cdot\ 0.49}{199.8}$$

A. 1/10
B. 1/8
C. 1/4
D. 5/4
E. 1/2

OA is B

Decimal fractions solving can be tricky, what is the best approach?
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by Brent@GMATPrepNow » Fri Dec 29, 2017 1:00 pm
Roland2rule wrote:Of the following, which is the closest approximation of $$\frac{50.2\cdot\ 0.49}{199.8}$$

A. 1/10
B. 1/8
C. 1/4
D. 5/4
E. 1/2
50.2 ≈ 50
0.49 ≈1/2
199.8 ≈ 200

So, (50.2)(0.49)/199.8 ≈ (50)(1/2)/200
≈ 25/200
≈1/8
= B
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by Scott@TargetTestPrep » Sun Aug 25, 2019 5:47 pm
BTGmoderatorRO wrote:Of the following, which is the closest approximation of $$\frac{50.2\cdot\ 0.49}{199.8}$$

A. 1/10
B. 1/8
C. 1/4
D. 5/4
E. 1/2

OA is B

Decimal fractions solving can be tricky, what is the best approach?
Approximating, we have:

(50 x 0.5)/200 = 25/200 = 1/8

Answer: B

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by rishab0507 » Tue Aug 27, 2019 5:30 am
Consider it as

50*0.5/ 200 = 25/200= 1/8
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