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.
Laura established a new flower garden, planting 4 tulip plan
[#permalink]
19 Aug 2018, 03:12
19 Aug 2018, 03:12
Expert Reply
2
Bookmarks
00:00
Question Stats:
98% (00:36) correct
1% (01:05) wrong based on 57 sessions
Hide Show timer Statistics
Laura established a new flower garden, planting 4 tulip plants for every 1 rose plant, and no other plants. If she planted a total of 50 plants in the garden, how many of those plants were tulips?
Show: :: OA
40
Retired Moderator
Joined: 10 Apr 2015
Posts: 6218
Given Kudos: 136
Re: Laura established a new flower garden, planting 4 tulip plan
[#permalink]
21 Aug 2018, 11:41
21 Aug 2018, 11:41
1
sandy wrote:
Laura established a new flower garden, planting 4 tulip plants for every 1 rose plant, and no other plants. If she planted a total of 50 plants in the garden, how many of those plants were tulips?
Show: :: OA
40
Let T = number of tulips planted
Let R = number of roses planted
Laura planted 4 tulips for every 1 rose
In other words, the ratio of tulips to roses = 4 to 1
Or we can write: T/R = 4/1
Cross multiply to get: T = 4R
Laura planted a total of 50 plants in the garden
In other words, T + R = 50
We now have 2 equations and 2 variables:
T = 4R
T + R = 50
When we solve the system (which I'll leave for you to do), we get: R = 10 and T = 40
Answer: 40
Cheers,
Brent
Re: Laura established a new flower garden, planting 4 tulip plan
[#permalink]
06 Aug 2019, 09:40
06 Aug 2019, 09:40
1
To me, it seems they are testing if you know part to part vs part to whole ratios (https://www.mathsisfun.com/numbers/ratio.html)
They only give us a part to part ratio, but it is up to us to find the part to whole ratio and use that to make a conversion.
For example, if there are 4 tulip plants per 1 rose plant (part to part), then there are 4 tulip plants to 5 plants (part to whole)
We multiply the given number of 50 plants by the ratio of 4 tulip plants to 5 plants to get 40 tulips.
You can see in the attached image that plants units will cancel out leaving only tulips.
They only give us a part to part ratio, but it is up to us to find the part to whole ratio and use that to make a conversion.
For example, if there are 4 tulip plants per 1 rose plant (part to part), then there are 4 tulip plants to 5 plants (part to whole)
We multiply the given number of 50 plants by the ratio of 4 tulip plants to 5 plants to get 40 tulips.
You can see in the attached image that plants units will cancel out leaving only tulips.
Attachments
daum_equation_1565113150759_tulip.png [ 9.44 KiB | Viewed 9054 times ]
