Aptitude - Decimal Fraction - Discussion
Discussion Forum : Decimal Fraction - General Questions (Q.No. 5)
5.
If 2994 ÷ 14.5 = 172, then 29.94 ÷ 1.45 = ?
Answer: Option
Explanation:
| 29.94 | = | 299.4 |
| 1.45 | 14.5 |
| = |  |
2994 | x | 1 |  |
[ Here, Substitute 172 in the place of 2994/14.5 ] |
| 14.5 | 10 |
| = | 172 |
| 10 |
= 17.2
Discussion:
35 comments Page 3 of 4.
Disha said:
8 years ago
Can anyone explain me this with the clear explanation?
Ram said:
7 years ago
@ALL.
Here, Only decimals change 14.5 to 1.45.
& 172.0 to 17.2.
Then
14.5 = 172.0.
And similarly 1.45 = 17.2.
Here, Only decimals change 14.5 to 1.45.
& 172.0 to 17.2.
Then
14.5 = 172.0.
And similarly 1.45 = 17.2.
Ajay said:
7 years ago
29.94 means 2994 * 10^-2,
And 1.45 means 145 * 10^-2,
Bt we know 2994/14.5 =172.
Converting to that form; 2994 * 10^-2/14.5 * 10^-1.
Therefore the 10^-1 frm the denominator is cancelled with the one 10^-1 frm 10^-2
So one 10^-1 left in the numerator.
Ie; 2994 * 10^-1/14.5 = 172 * 10^-1 = 17.2.
And 1.45 means 145 * 10^-2,
Bt we know 2994/14.5 =172.
Converting to that form; 2994 * 10^-2/14.5 * 10^-1.
Therefore the 10^-1 frm the denominator is cancelled with the one 10^-1 frm 10^-2
So one 10^-1 left in the numerator.
Ie; 2994 * 10^-1/14.5 = 172 * 10^-1 = 17.2.
Parthipan said:
6 years ago
Actually,
299.4/14.5=172 -------> (1)
29.94/1.45=x -------> (2)
Multiply (2) by 10
299.4/14.5=10x -------> (3).
Now divide(1)/(3)
We can get x = 17.2 answer.
299.4/14.5=172 -------> (1)
29.94/1.45=x -------> (2)
Multiply (2) by 10
299.4/14.5=10x -------> (3).
Now divide(1)/(3)
We can get x = 17.2 answer.
(10)
Philbert said:
6 years ago
I am not understanding this, please anyone explain me in detail.
(2)
Chetan said:
6 years ago
Given.
2994/14.5 = 172,
Now 29.94/1.45 can be expressed as 2994*10/14.5*100 = >2994/14.5*10.
Since 2994/14.5 = 172 then,
172 * 1/10 = 17.2.
2994/14.5 = 172,
Now 29.94/1.45 can be expressed as 2994*10/14.5*100 = >2994/14.5*10.
Since 2994/14.5 = 172 then,
172 * 1/10 = 17.2.
(4)
Sally said:
6 years ago
Why it is multiplying by 1/10?
(2)
Tenzin said:
6 years ago
2994/14.5 = 172 ( given).
29.94/1.45 = ?.
Now
29.94/1.45 *100/10 = 2994/14.5.
29.94/1.45* 100/10 = 172,
29.94/1.45 = 172 * 10/100,
29.94/1.45 = 17.2.
29.94/1.45 = ?.
Now
29.94/1.45 *100/10 = 2994/14.5.
29.94/1.45* 100/10 = 172,
29.94/1.45 = 172 * 10/100,
29.94/1.45 = 17.2.
(8)
Naveen Kumar Reddy said:
5 years ago
2994/14.5 * 10/100 = 172* 10/100 (multiply by 10/100 on both sides).
29.94/1.45 = 172*10/100.
29.94/1.45 = 172*1/10.
29.94/1.45 = 17.2.
29.94/1.45 = 172*10/100.
29.94/1.45 = 172*1/10.
29.94/1.45 = 17.2.
(5)
Anvesh nayak said:
5 years ago
29.94/1.45*10/10.
=299.4/14.5.
299.4/14.5*10/10.
=299.4*10/14.5*1/10.
2994/14.5*1/10.
But 2994/14.5=172.
So,
172*1/10,
=172/10,
=17.2.
=299.4/14.5.
299.4/14.5*10/10.
=299.4*10/14.5*1/10.
2994/14.5*1/10.
But 2994/14.5=172.
So,
172*1/10,
=172/10,
=17.2.
(5)
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