A car manufacturer produced a car at a cost of "d" dollars and sold it to a dealer at a price 20% higher than the production cost. If the dealer sold the car to a consumer for 15% more than the dealer paid for it, what did the car cost the consumer in dollars?

Question

A car manufacturer produced a car at a cost of "d" dollars and sold it to a dealer at a price  20% higher than the production cost.  If the dealer sold the car to a consumer for 15% more than the dealer paid for it, what did the car cost the consumer in dollars?

anonymous · Answer

1.35d

dan815 · Answer

nope

anonymous · Answer

1.37d?

dan815 · Answer

the price d was first increased by 20% of its price
so 1.2 * 1d = 1.2d
so 1.2d is current price now you want to increase 1.2d by 15%
so that is 1.15*1.2d

dan815 · Answer

you need to understand the question dont worry about the answer

anonymous · Answer

First, find the price that the car sold to dealer. 20％ higher than d means d+20％. So what is the price that 15％ higher than d+20％d?

dan815 · Answer

what does it mean to raise a price by 20% and then raise that price by 15%

anonymous · Answer

add .20

dan815 · Answer

okay i will delete my comments you need to really understand this

dan815 · Answer

chinese boy will guide you

anonymous · Answer

Thank you, dan815.

anonymous · Answer

d + .20
d + .20 + .15

anonymous · Answer

The right answer I think is 138％d. Why?

anonymous · Answer

I will tell you.

anonymous · Answer

Yes , that's the correct answer but how did you get 138d instead of 135d?  why  did you add the 3?

anonymous · Answer

As I have just said, "20％ higher than d" means d+20％d. So can you tell me "15％ higher than x" means what?

anonymous · Answer

.15x + X

anonymous · Answer

Now consider d+20％x as a whole number, in stead x. What would you get?

anonymous · Answer

I've got:   (d+ .20) +  .15 =  1.35d   but you are right with 1.38d and I don't understand where the 3 comes from.

anonymous · Answer

All right. Let me do for you. Please look carefully. 
(I got a mistake on last reply, sorry).
d+20%d+15%(d+20%d)

d+20%d+15%d+15%*20%d

Now can you get the right answer?
Pay attention to 15%*20%d

anonymous · Answer

Yes, I see the 15 and 20 percents but WHY would you add them twice?  Is it because of the process the car went through three time to get the final charge?

anonymous · Answer

THANK YOU....OOOOO kayyyyy..  I think I've got it!  I see the 3 d's  which makes it 1.38d instead of 1.35d.   

I set it up like this : production cost:  d
                              dealer purchas:    d + .20d
                               consumer cost:    (d + .20d)  + .15d  = 1.38d

anonymous · Answer

Yeah, you got it! Excellent!