Question

the average of seven number is 24 while the average of nine number including these 7 is 25 if the addition two number be in the ratio of 1:2 what is the smaller of these ​

Answer 1

Step-by-step explanation:

let the seven number be

a,b,c,d,e,f,g

a+b+c+d+e+f+g/7=24

a+b+c+d+e+f+g= 168. (1)

and 9 numbers be like this

a,b,c,d,e,f,g,h,i

a+b+c+d+e+f+g+h+i/9=25

(a+b+c+d+e+f+g)+h+i=225

168+h+i= 225

h+i=57(2)

h/i=1/2

2h=i. (3)

put the value of 'i' in eq.2

3h=57

h=19

i=2h

i =2×19

i=38

so h is smaller tha i

19 is smaller which is h