Question

dennis thinks of a number. he adds 0.5 to that numbers and them multiplies the new results by 4. he then subtracts 2 and devides the number by 2. his final answer is 48. whats number did dennis start with.?

Answer 1

Given

((x+0.5)*4-2)/2=48

(4x+2-2)/2=48

4x/2=48

2x=48

x=24

Therefore original number is 24

Answer 2

❇️hola dear!!!❇️

ANSWER/THE NUMBER IS 24.

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⏬⏬SOLUTION⏬⏬

✳️Let the number that Dennis begins with x. First we get x + 0.5.

✳️On the second operation, we get (x + 0.5) × 4 - 2.

✳️Lastly we get (x + 0.5) × 4 - 2 ÷ 2.

✳️Therefore we get that (x + 0.5) × 4 - 2 ÷ 2 = 48.

✳️Or,
(x + 0.5) × 4 - 2 = 48 × 2

✳️Or,
(x + 0.5) × 4 = 96 + 2

✳️Or,
x + 0.5 = 98 ÷ 4

✳️Or,
x = 24.5 - 0.5

✳️Therefore, x = 24

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hope it helps you!!☺️