Question

3 times the sum of number and 5 gives 45​

Answer 1

Given : 3 times the sum of number and 5 gives 45​

To Find : Number

Solution:

Let say Number = N

sum of number and 5   = N + 5

3 times the sum of number and 5 = 3 (N + 5)

3 times the sum of number and 5 gives 45

=> 3 (N + 5) = 45

=> N + 5 = 15

=> N = 10

Number is 10

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Answer 2

SOLUTION

GIVEN

3 times the sum of number and 5 gives 45

TO DETERMINE

The number

EVALUATION

STEP : 1

Assume the number

Let us assume that the number is x

STEP : 2

Find the sum of the number and 5

Now the sum of x and 5 = x + 5

STEP : 3

Find 3 times the sum of number and 5

Since the sum of x and 5 = x + 5

So 3 times the sum of number and 5 gives

$\sf{3(x + 5)}$

STEP : 4

Form the equation

Now it is given that 3 times the sum of number and 5 gives 45

So by the given condition

$\sf{3(x + 5)} = 45$

STEP : 5

Now solve for x

$\sf{3(x + 5)} = 45$

Dividing both sides by 3 we get

$\sf{(x + 5)} = 45$

Subtracting 5 from both sides we get

$\sf{ \implies \: x + 5 - 5 = 15 - 5}$

$\sf{ \implies \: x = 10}$

STEP : 6

Find the number

Hence the required number = 10

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