Aptitude - Decimal Fraction - Discussion

Discussion Forum : Decimal Fraction - General Questions (Q.No. 30)
30.
3.87 - 2.59 = ?
1.20
1.2
1.27
1.28
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 2 of 3.

Nirmala said:   1 decade ago
3.87-2.59 =1.28
whether this method is suit for all types of sums like this question

Noor said:   1 decade ago
Because upside of that no is power by bar that's why we have to divide by 99.

Narasingarao said:   1 decade ago
3.87 - 2.59 = 1.28.

Why answer is been given so lengthy and complicatedly.

Meghana said:   8 years ago
Good solution and even short cut way is also so good.

Naveen said:   1 decade ago
Why the all number divided by 99? Just tell.

Rahul said:   1 decade ago
Very good technique. Thanks to explain.

Ayantika Sasmal said:   2 years ago
I think the correct answer is 1.27bar.
(2)

Thamanna said:   1 decade ago
Why all the numbers are divided by 99?

Bhagyashri said:   1 decade ago
Why both numbers are divided by 99?

Keerthna said:   1 decade ago
3-2=1.
87-59=28.
3.87-2.59=1.28.


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