Which of the following most closely approximates
$$\sqrt{\frac{\left(3.97\right)\left(50.02\right)}{1.84}}=?$$
A. 1
D. 5
C. 10
D. 20
E. 100
Tha OA is C.
Why the answer choices are only integers? I don't understand it. Can any expert help me with this PS question please? Thanks.
5-Day Free Trial
5-day free, full-access trial TTP
Available with Beat the GMAT members only code
MORE DETAILS
Which of the following most closely approximates
This topic has expert replies
-
BTGmoderatorLU
- Moderator
- Posts: 2209
- Joined: Sun Oct 15, 2017 1:50 pm
- Followed by:6 members
GMAT/MBA Expert
-
[email protected]
- Elite Legendary Member
- Posts: 10392
- Joined: Sun Jun 23, 2013 6:38 pm
- Location: Palo Alto, CA
- Thanked: 2867 times
- Followed by:511 members
- GMAT Score:800
Hi LUANDATO,
The answer choices are 'spaced out' enough that we can use estimation to get to the correct answer (the prompt also TELLS US to approximate the value of the given calculation). Thus, let's round all of the numbers and calculate...
(4)(50)/(2) = 200/2 = 100
The square root of 100 = 10
Final Answer: C
GMAT assassins aren't born, they're made,
Rich
The answer choices are 'spaced out' enough that we can use estimation to get to the correct answer (the prompt also TELLS US to approximate the value of the given calculation). Thus, let's round all of the numbers and calculate...
(4)(50)/(2) = 200/2 = 100
The square root of 100 = 10
Final Answer: C
GMAT assassins aren't born, they're made,
Rich
-
EconomistGMATTutor
- GMAT Instructor
- Posts: 555
- Joined: Wed Oct 04, 2017 4:18 pm
- Thanked: 180 times
- Followed by:12 members
Hi LUANDATO,Which of the following most closely approximates
$$\sqrt{\frac{\left(3.97\right)\left(50.02\right)}{1.84}}=?$$
A. 1
D. 5
C. 10
D. 20
E. 100
Tha OA is C.
Why the answer choices are only integers? I don't understand it. Can any expert help me with this PS question please? Thanks.
Let's take a look at your question.
$$\sqrt{\frac{\left(3.97\right)\left(50.02\right)}{1.84}}=?$$
Since we are asked to approximate the value of the radical expression given, so let's round off the decimals to simplify.
$$\approx\sqrt{\frac{\left(4\right)\left(50\right)}{2}}$$
$$\approx\sqrt{\frac{200}{2}}$$
$$\approx\sqrt{100}$$
$$\approx10$$
Therefore, Option C is correct.
Hope it helps.
I am available if you'd like any follow up.
GMAT Prep From The Economist
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.
We offer 70+ point score improvement money back guarantee.
Our average student improves 98 points.
GMAT/MBA Expert
-
Scott@TargetTestPrep
- GMAT Instructor
- Posts: 7247
- Joined: Sat Apr 25, 2015 10:56 am
- Location: Los Angeles, CA
- Thanked: 43 times
- Followed by:29 members
The closest approximation is:BTGmoderatorLU wrote:Which of the following most closely approximates
$$\sqrt{\frac{\left(3.97\right)\left(50.02\right)}{1.84}}=?$$
A. 1
D. 5
C. 10
D. 20
E. 100
Tha OA is C.
Why the answer choices are only integers? I don't understand it. Can any expert help me with this PS question please? Thanks.
√[(4 * 50)/2]
√(2 * 50)
√100 = 10
Answer: C
Scott Woodbury-Stewart
Founder and CEO
[email protected]
See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews
