GRE Prep Club Daily Prep
Thank you for using the timer - this advanced tool can estimate your performance and suggest more practice questions. We have subscribed you to Daily Prep Questions via email.
Customized
for You
Track
Your Progress
Practice
Pays
Not interested in getting valuable practice questions and articles delivered to your email? No problem, unsubscribe here.
The average of a number and 20% of the number is 660. What is the numb
[#permalink]
14 Oct 2021, 05:20
14 Oct 2021, 05:20
Expert Reply
00:00
Question Stats:
76% (00:51) correct
23% (01:48) wrong based on 13 sessions
Hide Show timer Statistics
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
The average of a number and 20% of the number is 660. What is the numb
[#permalink]
14 Oct 2021, 05:58
14 Oct 2021, 05:58
1
Carcass wrote:
Let \(x\) = the number
So, \(0.2x\) = 20% of the number
If the average of the two numbers is \(660\), we can write: \(\frac{x + 0.2x}{2} = 660\)
Multiply both sides of the equation by \(2\) to get: \(x + 0.2x = 1320\)
Simplify: \(1.2x = 1320\)
Solve: \(x = \frac{1320}{1.2} = 1,100\)
Answer: \(1,100\)
gmatclubot
The average of a number and 20% of the number is 660. What is the numb [#permalink]
14 Oct 2021, 05:58
Moderators:
