该图表显示了一家商店从 3 月到 6 月售出的玩具数量。 在哪一个月的区间内，售出玩具数量的百分比增幅最大？ 答案：___ 到 ___

1. Read the number of toys sold for each month from the graph

March: $20$
April: $40$
May: $50$
June: $80$

2. Calculate the percentage increase from March to April

Increase = $40 - 20 = 20$
Percentage increase = $\frac{20}{20} \times 100\% = 100\%$

3. Calculate the percentage increase from April to May

Increase = $50 - 40 = 10$
Percentage increase = $\frac{10}{40} \times 100\% = 25\%$

4. Calculate the percentage increase from May to June

Increase = $80 - 50 = 30$
Percentage increase = $\frac{30}{50} \times 100\% = 60\%$

5. Compare the percentage increases to find the largest

The percentage increases are $100\%$, $25\%$, and $60\%$.
The largest percentage increase is $100\%$, which occurred from March to April.