Question

what same number must be subtracted from each of the term of number 10,12,19,24 to get the number proportion​

Answer 1

Answer:

Let the required no. Be 'x'

Now, According to ques,

10-x : 12-x : : 19-x : 24-x

Therefore,

10-x/12-x = 19-x/24-x

(10-x)(24-x)=(12-x)(19-x)

240-10x-24x+x^2=228-12x-19x+x^2

240-34x+x^2=228-31x+x^2

240-228-34x+31x+x^2-x^2=0

12-3x=0

12=3x

x=4. Ans. The required no. is 4.

Step-by-step explanation: