Owen has 20% more marbles than Danny. Danny has 40% less marbles than Connie. Owen has 21 marbles less than Connie. How many marbles does Danny have?

Answer 1

connie = c

danny = d = .6 c

owen = o = 1.2 d = 1.2*.6 c = .72 c

o = c - 21
so
o = c-21 = .72 c
.28 c = 21
c = 75
d = .6 c = 45 the end