Question

If the median of the data $4,7,x-1,x-3,16,25$,written in ascending order,is 13 then x is equal to

(a) 13 (b) 14 (c) 15 (d) 16

Answer 1

the median of the data $4,7,x-1,x-3,16,25$

so $13=\frac{x-1+x-3}{2}$

$2x-4=26$

$2x=30$

$x=15$