If one-third of one-fourth of a number is 15, then three-tenth of that number is:
A. 35
B. 36
C. 45
D. 54
E. None of these
Answer: Option D
Solution(By Examveda Team)
$$\eqalign{ & {\text{Let}}\,{\text{the}}\,{\text{number}}\,{\text{be}}\,x \cr & {\text{Then}},\,\frac{1}{3}\,{\text{of}}\,\frac{1}{{4\,}}\,{\text{of}}\,x = 15\cr & \Rightarrow \, x = 15 \times 12 = 180 \cr & {\text{So,}}\,{\text{required}}\,{\text{number}} \cr & = {\frac{3}{{10}} \times 180} \cr & = 54 \cr} $$This Question Belongs to Arithmetic Ability >> Problems On Numbers
1/3 and 1/4 = 12 (Multiply the denominator 3 * 4 =12)
15*12=180
In The Question Requirement is : "then three-tenth of that number is:"
So We Get 3/10
3/10*180 (we can cut 180 is 18 time comes into 10th table )
So 3 * 18 = 54
@sarasangma, Question says, 1/3 * 1/4 * X = 15, which means X=180 , yeah ? Then, again, as per question the ans is : 180 * 3/10 = 54.
X*1/3*1/4=15
Then X=15*12=180
180*3/10=54
I can't understand this question can anyone help me to solve this problems answer
12 × 15 =180
How we get 54.can anyone help me out.