Question

a+1, 2a-1 ,a+7 and 3a+4 are in ascending order. if the median is 17. find the value of a.​

Answer 1

Since we have an even amount of numbers here, the median is going to be the average of the two middle values, in this case:

(2a-1+a+7)/2 = 17

(3a +6)/2 = 17

3a + 6 = 34

3a = 28

a = 9$\frac{1}{3}$