Aptitude - Problems on Numbers - Discussion
Discussion Forum : Problems on Numbers - General Questions (Q.No. 1)
1.
If one-third of one-fourth of a number is 15, then three-tenth of that number is:
Answer: Option
Explanation:
Let the number be x.
| Then, | 1 | of | 1 | of x = 15  x = 15 x 3 x 4 = 180. |
| 3 | 4 |
| So, required number = |  |
3 | x 180 |  |
= 54. |
| 10 |
Video Explanation: https://youtu.be/z49OUnzTnwY
Discussion:
70 comments Page 1 of 7.
Saurabh said:
7 years ago
1 / 3 * 1/4 * n = 15.
1/12 *n = 15,
n= 12 *15 = 180,
3/10 * 180 = 54.
1/12 *n = 15,
n= 12 *15 = 180,
3/10 * 180 = 54.
(17)
Jesvin said:
5 years ago
How did 15 come? explain.
(8)
Bijay said:
2 years ago
(1/3*1/4) * x = 15.
X/12 = 15,
X = 15/12,
X = 180,
3/10 = 180,
= 3 * 18,
= 54.
X/12 = 15,
X = 15/12,
X = 180,
3/10 = 180,
= 3 * 18,
= 54.
(7)
Ramnik said:
6 years ago
I am not understanding. Please explain me.
(5)
ARAVIND BONGONI said:
6 months ago
The one-third = 1\3.
One fourth is = 1\4.
Then, 1\3 + 1\4 + x = 15.
X = 15 * 3 * 4 = 180.
Then the equation is one-third of one-fourth is 15,
The three-tenth number is?
[3\10] * 180 = 54.
[1\3] * 180 = 60.
[1\4] * 180 = 45.
The equation of one third - one fourth = 15.
= 60 - 45 = 15.
Hence, proved the equation 1\3 of 1\4 is 15.
One fourth is = 1\4.
Then, 1\3 + 1\4 + x = 15.
X = 15 * 3 * 4 = 180.
Then the equation is one-third of one-fourth is 15,
The three-tenth number is?
[3\10] * 180 = 54.
[1\3] * 180 = 60.
[1\4] * 180 = 45.
The equation of one third - one fourth = 15.
= 60 - 45 = 15.
Hence, proved the equation 1\3 of 1\4 is 15.
(4)
Samba said:
8 years ago
1/3*1/4=15,
1/12=15,
12*15=180,
then take3/10=180,
3/10*180 = 54.
1/12=15,
12*15=180,
then take3/10=180,
3/10*180 = 54.
(4)
Bhavik said:
5 years ago
Why you have taken 180? Please explain.
(4)
Sonam pal said:
11 months ago
Thanks all for helping me.
(3)
Usha said:
7 years ago
How come 3/10? Please explain.
(2)
ARIKALA SRIHARI said:
1 year ago
@Jesvin
X=180
The question said 1/3 of 1/4 of x is 15.
1/4 of 180 is 45
1/3 of 45 is 15.
X=180
The question said 1/3 of 1/4 of x is 15.
1/4 of 180 is 45
1/3 of 45 is 15.
(2)
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