Question

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

Answer 1

1,271

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