Question

Greg is participating in 4 days cross country biking challenge he biked for 46,54 and 46 miles on the first three days how many miles does he need to bike on the last day so that his average mean is 48 miles per day

Answer 1

Answer: 46 miles

Work Shown

x = amount hiked on 4th day

To get the average, add up the values and divide by the sample size 4. Set this average equal to 48 so we can solve for x.

(46+54+46+x)/4 = 48

(146+x)/4 = 48

146+x = 4*48

146+x = 192

x = 192-146

x = 46