php. 880 000

because the 5% is 40 000

Question

Mr. and Mrs. Tan bought a car for ₱840 000 and paid 5% for the tax. How much did the car cost with tax?

Answer

882000 did the car cost with tax

Explenation

To get the solution, we are looking for, we need to point out what we know.

1. We assume, that the number 840000 is 100% - because it's the output value of the task.

2. We assume, that x is the value we are looking for.

3. If 840000 is 100%, so we can write it down as 840000=100%.

4. We know, that x is 5% of the output value, so we can write it down as x=5%.

5. Now we have two simple equations:

1) 840000=100%

2) x=5%

where left sides of both of them have the same units, and both right sides have the same units, so we can do something like that:

840000/x=100%/5%

6. Now we just have to solve the simple equation, and we will get the solution we are looking for.

7. Solution for what is 5% of 840000

840000/x=100/5

(840000/x)*x=(100/5)*x       - we multiply both sides of the equation by x

840000=20*x       - we divide both sides of the equation by (20) to get x

840000/20=x

42000=x

x=42000

now we have:

5% of 840000=42000