If One-third of one-fourth of a number is 15, then three-tenth of that number is:
A 54
B 45
C 36
D 35
E None
Solution
Correct Answer: Option A
মনেকরি,
সংখ্যাটি = x
প্রশ্নমতে,
x এর 1/4 এর 1/3 = 15
⇒ x/4 এর 1/3 = 15
⇒ x/12 = 15
⇒ x = 12 × 15
∴ x = 180
180 এর 3/10 = (180 × 3)/10 = 54