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PSAT 1.30 Math Diagnostic 177 Views
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Description:
PSAT 1.30 Math Diagnostic. How long would it take Wanda to finish a 2000-m race?
Transcript
- 00:00
Thank you We sneak and here's your shmoop too sure
- 00:05
brought to you by the fifty meter dash for when
- 00:07
you wanted to note a really long break in a
- 00:10
sentence Wanda runs the fifty meter dash in nine seconds
- 00:16
Her mile paces approximately three point two meters per second
Full Transcript
- 00:20
If one two ran at her fifty meter pays for
- 00:22
the first five hundred meters and the remainder of the
- 00:24
race at her slower a mile paste Approximately how long
- 00:28
would it take wanda to finish a two thousand meter
- 00:31
race And here the potential answers meters and miles and
- 00:36
it's like oil and water right Well sounds like wanda
- 00:39
is lacking either in energy or motivation As the race
- 00:42
goes on maybe make her wear meat shorts and release
- 00:46
a hungry cheetah somewhere around fifty meter mark that helps
- 00:48
speed her up and make for some good entertainment until
- 00:52
the mauling began All right we take it back That's
- 00:54
Not the best idea All right So for five hundred
- 00:56
meters one fourth of the race wanda is booking along
- 01:00
at her fifty meter paste That which she can go
- 01:03
fifty meters in nine seconds for the other fifteen hundred
- 01:06
meters She slows to her mile pace of three point
- 01:09
two meters per second And this question wants to know
- 01:12
how much total time it'd take her to go Wire
- 01:14
the wire All right well let's just break it up
- 01:17
Almost as if this were to separate races and then
- 01:19
we'll just add the two times together Well if one
- 01:22
goes fifty meters in nine seconds then how long will
- 01:25
it take her to go Five hundred meters while five
- 01:27
hundred is fifty times ten So we'll have to multiply
- 01:30
her time by ten as well and looks like it
- 01:33
would take her in ninety seconds to go the first
- 01:35
five hundred meters then for the latter part of the
- 01:38
race No no not the latter part of the race
- 01:40
That would be too cruel Kind of funny He slows
- 01:43
to three point two meters per second So we're gonna
- 01:46
want to know how many times Three point two goes
- 01:48
into fifteen hundred Well fifteen hundred divided by three point
- 01:51
two is about four hundred sixty eight point seven Five
- 01:55
So that's how many seconds it will take her to
- 01:58
go the last fifteen hundred meters adding them together We
- 02:01
take ninety seconds Plus four hundred sixty eight Yeah Change
- 02:05
seconds to get five hundred fifty eight point seven six
- 02:09
seconds Which doesn't look anything like any of our answer
- 02:12
choices Oh yeah we're supposed to convert that into minutes
- 02:16
Celia's Well there are sixty seconds in a minute so
- 02:18
let's divide five fifty eight and changed by sixty and
- 02:21
we get nine minutes with a remainder of around nineteen
- 02:24
seconds which is option b We're glad we decided to
- 02:27
replace the meat shorts with carrot pants and the cheetah
- 02:30
with bunny rabbits It's still added an unforeseen challenge but
- 02:34
at least wanda will live to tell the tale Ah
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