a boy was asked to multiply a number by 12 by mistake He multiplied the number by 21 and got his answers is 63 more than the correct answer the number was
Answers
Answered by
47
↪Heya
⭐hers your answer....⭐
Let the no. be X
then According to the question:
12x = 21x-63
63 = 21x-12x
63= 9x
63÷9 =x
7=x
⭐12x= 84
⭐21x+63= 210
↪ Hope it helps...✌✌
⭐hers your answer....⭐
Let the no. be X
then According to the question:
12x = 21x-63
63 = 21x-12x
63= 9x
63÷9 =x
7=x
⭐12x= 84
⭐21x+63= 210
↪ Hope it helps...✌✌
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ur in which class?
11
Then it would not be possible for me to answer the questions
Answered by
1
Given:
The number is multiplied by 12.
To find:
The correct number.
Solution:
Let us take the correct number as X.
The correct answer if X is multiplied by 12 = 12 X
The answer obtained when the number X is multiplied by 21 is 63 more than the correct answer.
Therefore,
21 X = 63 + 12 X
21 X – 12 X = 63
9 X = 63
X= 7
Therefore,
The correct number is 7.
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