Question

If the cost of car goes down every year by 15% of its previous value find the original cost if the cost of it after 2 years is 2,16,750/-

Answer 1

here is ur answer.......

Answer 2

Hello Friends...

After 2 year cost prise of car =216750₹

Rate of decreasing prise = 15%p.a.

Time = 2years

Let the original CP of car = x ₹

let y = cost of next one year

So, next year cost rate = 15% less
y = x-0.15x = 0.85x
Now the nect year cost of car = 15%less
Now, According to the problem....
y-0.15y = 0.85x
We have the cp of 2 years later. = 216750₹
So, 0.85y = 216750
But y = 0.85x
So, 0.85×0.85x = 216750
x = 216750÷(0.85×0.85) = 300000₹
So the car was actually 300000₹of cost.

Thankyou Buddy.