Sarah bought a TV for £250 Three years later she sold it for £180
Work out her percentage loss

The transitive property of equality states that: o if a = b, then bra o if a = b, then ac = bc o if a = b and b= c, then a = if a = b and c= c, then a + b = b + c

If olu is twice as old as funmi if the sum of their ages is 60 how old is olu

The standard deviation for a set of data is 5.5. the mean is 265. what is the margin of error?