Question

I think of a number.I add 7 to it and then divide it by 10.My answer is 3.8.What number did I start with?​

Answer 1

Answer:

³¹ by solving it in the following way

Step-by-step explanation:

Let the no be x

so {x+7}÷10=3.8

so x+7= 3.8×10

x+7=38

x= 38-7

x= 31

Answer 2

Concept

Assumption is the process to find the missing number. We have to assume a number with a variable so that we can find the value of that variable and hence assumption is used.

Given

The statement given is 7 is added to a number and then divide by 10 where the answer is 3.8

Find

We need to find the number

Solution

Let us assume the number to be x

Now if 7 is added to it then Expression formed is

x+7----(1)

After that it is divide by 10 which is equal to 3.8

So,

x+7/10=3.8

Therefore

x+7=3.8*10

x+7=38

x=31

Hence the Value is 31

#SPJ2