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30 Jan 2012, 17:24
Kudos
Bookmarks
A certain electronic component is sold in boxes of 54 for $16.20 and in boxes of 27 for $13.20. A customer who needed only 54 components for a project had to buy 2 boxes of 27 because boxes of 54 were unavailable. Approximately how much more did the customer pay for each component due to the unavailability of the larger boxes.
OG-#125
The only problem I am having with is figuring out the last step.
I found difference and now must solve for 10.2/54. I tried doing long division (which will not work well in a 2 minute time-frame) and then tried breaking up the numerator and denominator. What do you recommend I do for similar questions like this where long division is not optimal and the numbers do not break up easily. I got it down to 17/90 but how am I supposed to know this represents .19?
Thanks
OG-#125
The only problem I am having with is figuring out the last step.
I found difference and now must solve for 10.2/54. I tried doing long division (which will not work well in a 2 minute time-frame) and then tried breaking up the numerator and denominator. What do you recommend I do for similar questions like this where long division is not optimal and the numbers do not break up easily. I got it down to 17/90 but how am I supposed to know this represents .19?
Thanks
30 Jan 2012, 21:15
Kudos
Bookmarks
With these type of problems it is best to round and estimate.
so you have 10.2/54 I would round it to 10/54 would make it easier to work out and you just choose the answer choice that is closest to your answer
so 10/54 would be .185 and just round it up to .19 which is the answer
so you have 10.2/54 I would round it to 10/54 would make it easier to work out and you just choose the answer choice that is closest to your answer
so 10/54 would be .185 and just round it up to .19 which is the answer
30 Jan 2012, 22:43
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jmehrabi
Yes, approximation is the best bet in such calculations.
10.2/54
Double of 54 is 108 so if you had 10.8/54, your answer would be .2
But you have a little less than 10.8. So your answer will be a little less than .2
