1.5 hours = 90 minutes.
So a ratio of 18:90 is the same as 1:5 since both numbers have a GCF of 18.
Mean means average (no pun intended)
HOW TO FIND THE MEAN
so basically to find the mean let's say you have 4 terms x,y,z,t
to find the mean, add them and divide by the number of terms you have (4)
(x+y+z+t)/4=mean
so we have the numbers
46,38,53,34,27,54
6 numbers total
add then and divide by 6
(46+38+53+34+27+54)/6=252/6=42
answe ris 42
