Question

the cost of a car goes down evry year 15% of its previous value find the original cost if the cost of it after 2 years is Rs.2,16,750​

Answer 1

Step-by-step explanation:

we will add 30 percent as we know that after every year the cost will be decreased by 15 percent per year after 2 year 15 percent will be subrtacted from it so it will be

2,16,750-30%=151725

Answer 2

$\large\underline{\underline{\sf Given:}}$

• The cost of car goes every year 15% of its previous .

$\large\underline{\underline{\sf To\:Find:}}$

• Final cost if the cost of it after 2 years is Rs.216750

$\large\underline{\underline{\sf Solution:}}$

Let ,

Original cost is = x

then ,

According to Question :

its cost in next year will be 15% less.

Let ,

Y = Cost of car in next year .

$\large\implies{\sf Y=x-0.15x}$

$\large\implies{\sf Y=0.85x}$

Now , again next year its price will be 15% less.

so ,

$\large\implies{\sf Y-0.15Y=0.85x}$

We know cost price after 2 years is Rs.2,16,750

$\large\implies{\sf 0.85x=216750}$

$\large\implies{\sf Y=0.85}$

$\large\implies{\sf 0.85×0.85x=216750}$

$\large\implies{\sf x=300000 }$

$\large\underline{\underline{\sf Answer:}}$

•°• Original cost if the cost of it after 2 years is Rs.216750 is Rs.300000