Question

Erica chooses a number. She divides it by four then subtracts 11. She then divides this result by two. What was the number she started with?

Answer 1

Answer:

144

Step-by-step explanation:

Let x be the number.

Divide it by 4

x/4

Subtract 11

x/4 - 11

x-44/4

Divides this result by 2

x-44/4 ÷ 2

x-44/4 × 1/2

x-44/8

Her answer is 12.5

therefore, x-44/8 = 12.5

                 x-44 = 12.5 × 8

                 x = 100 + 44

                 x = 144

Hence,

She started with 144 number.

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Answer 2

Answer:

number = x

x / 4 - 11 / 2

x /4 = 2*11 = 22

x = 22 + 4 = 26 * 15 = 60

60 / 4 = 15 - 11 = 4 / 2 = 2

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