The sum of 3 hours 45 minutes and 2 hours 55 minutes is approximately what percent of a day?

This topic has expert replies
Moderator
Posts: 6595
Joined: 07 Sep 2017
Followed by:20 members

Timer

00:00

Your Answer

A

B

C

D

E

Global Stats

The sum of 3 hours 45 minutes and 2 hours 55 minutes is approximately what percent of a day?

(A) 14%
(B) 16%
(C) 24%
(D) 28%
(E) 72%


OA D

Source: GMAT Prep

Legendary Member
Posts: 2087
Joined: 29 Oct 2017
Followed by:6 members
BTGmoderatorDC wrote:
Sat Mar 05, 2022 6:49 pm
The sum of 3 hours 45 minutes and 2 hours 55 minutes is approximately what percent of a day?

(A) 14%
(B) 16%
(C) 24%
(D) 28%
(E) 72%


OA D

Source: GMAT Prep
Try as follows

\(3h45+2h55= 5h(45+55)=5h(1h40)=6h40\)

Then,
\(100\% \cdot \dfrac{6h40}{24h}\) is between \(~ \dfrac{6\cdot4}{100}\; ~24\%\) and \(~\dfrac{7\cdot4}{100}~28\%\)

Since \(6h40\) is closer to \(7\), the correct answer is D