Aptitude - Decimal Fraction - Discussion
Discussion Forum : Decimal Fraction - General Questions (Q.No. 9)
9.
| (0.1667)(0.8333)(0.3333) | is approximately equal to: |
| (0.2222)(0.6667)(0.1250) |
Answer: Option
Explanation:
| Given expression |
|
||||||||||||||||
|
|||||||||||||||||
|
|||||||||||||||||
|
|||||||||||||||||
| = 2.50 |
Discussion:
43 comments Page 3 of 5.
Satish said:
1 decade ago
Here is a solution:
0.1667 = 0.1666 ; 0.16 (6-bar) ; (16-1)/90 = 1/6.
0.8333 = 0.83 (3-Bar); (83-8)/90= 75/90 = (5/6).
0.3333 = 0.3 (3-bar); (3/9) = 1/3.
0.2222 = 0.2 (2-bar); (2/9).
0.6667 = 0.6 (6-bar); 6/9 = 2/3.
0.1250 = 1/8.
Substitute at the given places and get the answer as 2.50.
Study Conversion of Recurring Decimals.
0.1667 = 0.1666 ; 0.16 (6-bar) ; (16-1)/90 = 1/6.
0.8333 = 0.83 (3-Bar); (83-8)/90= 75/90 = (5/6).
0.3333 = 0.3 (3-bar); (3/9) = 1/3.
0.2222 = 0.2 (2-bar); (2/9).
0.6667 = 0.6 (6-bar); 6/9 = 2/3.
0.1250 = 1/8.
Substitute at the given places and get the answer as 2.50.
Study Conversion of Recurring Decimals.
(1)
Satish said:
1 decade ago
0.1667 can be treated as 0.16666 since they are asking for approximate values.
Aruna said:
1 decade ago
I see approximate value.
Samreen said:
9 years ago
It's given as 0.1667, not as 0.166666. So how can you take as 0.16 bar.
Samreen said:
9 years ago
According to vulgar fractions;
If given 0.1666 = (16 - 1)/90 = 15/90 = 1/6.
But here 0.1667 so can we consider it as 0.1666.
If given 0.1666 = (16 - 1)/90 = 15/90 = 1/6.
But here 0.1667 so can we consider it as 0.1666.
(1)
Rajeshdharamdasani said:
9 years ago
How 0.1250 = 1/8? Please explain me.
Ramesh said:
9 years ago
Here is the thing.
x = .8333 can be converted as 100x = 83.3333 and 10X = 8.3333, and why so because we need to focus on how many decimals are recurring here it's just one(3) and so we need to remove that.
Always put recurring part behind the decimal (here by multiplying with 10) .and this way the result comes out to be 83 - 8/90 = 75/90 = 5/6 and 0.1250 = 125/1000 = 1/8.
x = .8333 can be converted as 100x = 83.3333 and 10X = 8.3333, and why so because we need to focus on how many decimals are recurring here it's just one(3) and so we need to remove that.
Always put recurring part behind the decimal (here by multiplying with 10) .and this way the result comes out to be 83 - 8/90 = 75/90 = 5/6 and 0.1250 = 125/1000 = 1/8.
Ramesh said:
9 years ago
In simple words for recurring decimals keep recurring values behind the decimals and assume it as your starting point.
X=.83333 so let's assume Z= 8.3333 and you know Z=10X ,and now solve Z and you will get Z = 75/9.
And later you can solve for X which will be 10X = 7.5/9 or X = 75/90.
X=.83333 so let's assume Z= 8.3333 and you know Z=10X ,and now solve Z and you will get Z = 75/9.
And later you can solve for X which will be 10X = 7.5/9 or X = 75/90.
Abchamp said:
9 years ago
Thank you @Brk.
Sai Manohar said:
9 years ago
Cant we solve using round off method like
(2 * 8 * 3)/(2 * 7 * 1) = 3.4.
Am I right?
(2 * 8 * 3)/(2 * 7 * 1) = 3.4.
Am I right?
Post your comments here:
Quick links
Quantitative Aptitude
Verbal (English)
Reasoning
Programming
Interview
Placement Papers