Hi Everyone,
I've started studying for the GMAT, and I'm trying to focus on not only getting the answer right but also learning the most efficient way to solve the problems. My questions below:
1) What is the result if 0.0777 is multiplied by 990/7? Answer - 11
2) What is the result if 0.00667/800 is divided by 0.025/3000? Answer - 1
I've tried to get the problems down to the simplest form by using scientific notation and crossing out the equivalent notation found in the numerator and/or denominator (i.e. .00667 = 1/6 times 10 ^ -5 ), but I'm having no luck at arriving at the answers.
Can someone help provide a strategy to efficiently solve the problems above?
Thanks!
Decimal Calculation Problems - Most Efficient Way to Solve?
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- David Chong
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Lauren:
The approach that you are taking to the problem is an effective one. The difficulty you are encountering is a matter of mechanics. For example:
Hope this helps, and best of luck with your preparation!
--
David Chong
Manhattan GMAT
The approach that you are taking to the problem is an effective one. The difficulty you are encountering is a matter of mechanics. For example:
- 0.00667 DOES NOT EQUAL (1/6) * (10^-5)
- (1/6) * (10^-5) = 0.000001667
- 0.00667 = (2/3) * (10^-2)
- [(2/3) * (10^-2)] / 800
- [(1/4) * (10^-1)] / 3000
Hope this helps, and best of luck with your preparation!
--
David Chong
Manhattan GMAT