Question

if X is the mean of the first 8 positive integral multiples of 9 and Y is the median of the same numbers find the value of 5X - 3Y​

Answer 1

Answer:

81

Step-by-step explanation:

first 8 positive integral multiples of 9 are

9,18,27,36,45,54,63,72

their mean is 40.5 = x

median is 40.5 = y

5(40.5) - 3(40.5) = 81