helppppppppppppppppppppppppppppppppppppppp

Answer: ?=ratio sorry im not good with that
Step-by-step explanation: b=2/5, 0.4
c= ?, 0.21, 21%
d= 3/10 ?,30%
e= 1/4, ?, 0.25
Answer:
a) percent: 50%
b) fraction: 2/5, decimal: 0.4
c) ratio: 21:100 , decimal: 0.21 , percent: 21%
d) fraction: 3/10, ratio: 3:10, percent: 30%
e) fraction: 1/4, ratio: 1:4, decimal: 0.25
Step-by-step explanation:
I hope it helps, mark brainliest if it does!