Answer:
3/10
Explanation:
equation 1 and 2 can be derived from the question
cake = apple dumplings - 1/10 eqn 1
apple dumplings = 3/10 + crisp eqn 2
if 5/10 sugar was used to make cake , substitute for it in eqn 1
5/10 = apple dumplings - 1/10
apple dumplings = 5/10 + 1/10 = 6/10
Substitute for the amount of sugar used to make apple dumplings in eqn 2
6/10 = 3/10 + crisp
crisp = 6/10 - 3/10 = 3/10
cake - 1/10 = apple d
apple d = 6/10