Question

Six out of eight dentists recommend crust toothpaste in a group of 156 dentists how many of them would recommend crest

A. 208
B. 147
C.117
D. 154​

Answer 1

117

Explanation:

crest : 6 x19.5=117

no creast : 2x19.5=39

whole : 8/156=19.5