Aptitude - Decimal Fraction - Discussion
Discussion Forum : Decimal Fraction - General Questions (Q.No. 30)
30.
3.87 - 2.59 = ?
Answer: Option
Explanation:
3.87 - 2.59 = (3 + 0.87) - (2 + 0.59)
| = |  |
3 + | 87 |  |
- | |
2 + | 59 | |
| 99 | 99 |
| = 1 + | |
87 | - | 59 | |
| 99 | 99 |
| = 1 + | 28 |
| 99 |
= 1.28.
Discussion:
25 comments Page 1 of 3.
Akiii said:
1 decade ago
Good technique to solve.
Cool101 said:
1 decade ago
Or
3.87-2.59=1.28
3.87-2.59=1.28
Nirmala said:
1 decade ago
Why 87 is divided by 99?
Nirmala said:
1 decade ago
3.87-2.59 =1.28
whether this method is suit for all types of sums like this question
whether this method is suit for all types of sums like this question
Bhagyashri said:
1 decade ago
Why both numbers are divided by 99?
Iti said:
1 decade ago
Why we have divided the numbers with 99?
Do we do this with every number or is it a trick?
Do we do this with every number or is it a trick?
Koustubh said:
1 decade ago
For those who are asking that why the numbers are divided by 99. Watch the important formulas section (converting a pure recurring decimal into vulgar fraction).
Prem said:
1 decade ago
Bar upon the number indicates repeat that number. That is why we divide the number by 99. It's good idea.
Narasingarao said:
1 decade ago
3.87 - 2.59 = 1.28.
Why answer is been given so lengthy and complicatedly.
Why answer is been given so lengthy and complicatedly.
Thamanna said:
1 decade ago
Why all the numbers are divided by 99?
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