Question

think of a number,add 10,then multiply by 2. the answer is 100. what is the number ?
(a) 45
(b)65
(c)40
(d)50

plz Answer.​

Answer 1

Answer:

40

Step-by-step explanation:

40+10=50

50x2=100

Henceforth,the answer is 40

Answer 2

Answer:

40 is the answer

Step-by-step explanation:

Let the number be x

Now, After adding 2 followed by multiplying it by 10,we get,

2(x+10)=100

or, 2(x+10)/2=100/2(dividing both sides by 2)

or x+10=50

or,x+10-10-50-10(subtracting 10 from both sides)

or,x=40