AMC8 2026
AMC8 2026 · Q4
AMC8 2026 · Q4. It mainly tests Percent.
Brynn's savings decreased by $20\%$ in July, then increased by $50\%$ in August. Brynn's savings are now what percent of the original amount?
布琳的存款在七月份减少了$20\%$，然后在八月份增加了$50\%$。布琳的存款现在是原来金额的百分之多少？
(A)
80
80
(B)
90
90
(C)
100
100
(D)
110
110
(E)
120
120
Answer
Correct choice: (E)
正确答案：（E）
Solution
We see that the change is $(1-0.2)(1+0.5)=0.8\cdot1.5=1.2$. That is an increase of $0.2$, or (E) $120\%$.
我们看到变化为 $(1-0.2)(1+0.5)=0.8\cdot1.5=1.2$。这相当于增加了 $0.2$，即（E）$120\%$。
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