BREAKING: Target Test Prep releases Brand New 2026 On Demand GMAT prep course

Redeem

What is the sum of the prime factors of 570?

This topic has expert replies
Post new topic Post Reply
Previous Topic Next Topic
Source: — Problem Solving |
Legendary Member
Posts: 2898
Joined: Thu Sep 07, 2017 2:49 pm
Thanked: 6 times
Followed by:5 members

by Vincen » Fri May 11, 2018 8:14 am
VJesus12 wrote:What is the sum of the prime factors of 570?

A. 29
B. 30
C. 65
D. 66
E. 67

The OA is the option A.

May anyone helps me here? I got 30. I need some help. <i class="em em-tired_face "></i>
Hello Vjesus12.

Here, we first have to find the prime factorization of 570 as follows: $$570=2\cdot285=2\cdot3\cdot95=2\cdot3\cdot5\cdot19.$$ Therefore, the prime factors of 570 are: 2, 3, 5 and 19 and its sum is: $$2+3+5+19=29.$$ This tells us that the correct answer is the option A (maybe you made a mistake when you added the factors).

I hope it helps you.

Regards.
Top

GMAT/MBA Expert

User avatar
GMAT Instructor
Posts: 8086
Joined: Sat Apr 25, 2015 10:56 am
Location: Los Angeles, CA
Thanked: 43 times
Followed by:29 members

by Scott@TargetTestPrep » Tue May 07, 2019 5:41 pm
VJesus12 wrote:What is the sum of the prime factors of 570?

A. 29
B. 30
C. 65
D. 66
E. 67

The OA is the option A.

May anyone helps me here? I got 30. I need some help. <i class="em em-tired_face "></i>
Let's break 570 into prime factors:

570 = 57 x 10 = 19 x 3 x 5 x 2

Thus, the sum of the prime factors is 19 + 3 + 5 + 2 = 29.

Answer: A

Scott Woodbury-Stewart
Founder and CEO
[email protected]

Image

See why Target Test Prep is rated 5 out of 5 stars on BEAT the GMAT. Read our reviews

ImageImage
Top
Post new topic Post Reply
• Page 1 of 1