Dennis thought of a number. He adds 0.5 to that number and then multiplies the new result by 4. He then subtracts 2 and divides the number by 2. His final answer is 48. What number did Dennis start with?
a) 20 b)24
c)23.5 d)28.5
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Answered by
1
b)24 is the number which Dennis started with. let's take the number be x add 0.5 it becomes x+0.5.multiply by 4 it becomes 4x+2. subtract 2 it becomes 4x . divide by 2 it becomes 2x.it is given 2x=48 so x=24.
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Answered by
9
.......option number B. 24 will be the correct anwer.......
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