the mean of a,b,c,d,e is 28, if the mean of a,c,e is 24 then what is the mean of b and d

a+b+c+d+e/5=28

a+b+c+d+e=28 *5=140

a+c+e/3=24

a+c+e=72

a+b+c+d+e-a-c-e=140-72

b+d=68

therefore mean = b+d/2 =68/2=34