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14-11-2020
Mathematics

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Last year there were 620 7th graders. This year the enrollment has increased by 105%. How many 7th graders are there this year?

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14-11-2020

Answer:

1,271

Step-by-step explanation:

620 + (105% × 620) =

620 + 105% × 620 =

(1 + 105%) × 620 =

(100% + 105%) × 620 =

205% × 620 =

205 ÷ 100 × 620 =

205 × 620 ÷ 100 =

127,100 ÷ 100 =

1,271

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