A boy was asked to multiply a number by 25. He instead multiplied the number by 52 and got the answer 324 more than the correct answer. The number to be multiplied was:
সমাধান
সঠিক উত্তর: Option A
Let the number be 'x'.
According to the question,
The student multiplied by 52 instead of 25.
So, the wrong result is 52x and the correct result is 25x.
Difference between the two results:
52x - 25x = 324
Or, 27x = 324
Or, x = 324 / 27
∴ x = 12
So, the number to be multiplied was 12.
শর্টকাট টেকনিক (MCQ এর জন্য):
নির্ণেয় সংখ্যা = পার্থক্য / (ভুল সংখ্যা - সঠিক সংখ্যা)
= 324 / (52 - 25)
= 324 / 27
= 12
According to the question,
The student multiplied by 52 instead of 25.
So, the wrong result is 52x and the correct result is 25x.
Difference between the two results:
52x - 25x = 324
Or, 27x = 324
Or, x = 324 / 27
∴ x = 12
So, the number to be multiplied was 12.
শর্টকাট টেকনিক (MCQ এর জন্য):
নির্ণেয় সংখ্যা = পার্থক্য / (ভুল সংখ্যা - সঠিক সংখ্যা)
= 324 / (52 - 25)
= 324 / 27
= 12
