15 key chains cost 11.75 A. E. D. What will be the cost of 36 key chains? How many key chains can we buy for 225 A. E. D?

Cost of 36 key chains is 28.19 A. E. D

You will get 287 key chains for 225 A. E. D

Step-by-step explanation:

15 = 11.75

1 = ?

(cross multiply)

11.75/15 = 0.783 A. E. D (which is the cost of 1 key chain)

cost of 36 key chains = cost of 1 key chain * 36

= 0.783 * 36 = 28.19 A. E. D

There fore the cost of 36 key chains is 28.19 A. E. D

Now

to find the number of key chains we can buy for 225 A. E. D we will divide 225 by 0.783

So,

225/0.783 = 287.356

Since the number of key chains cannot be in decimals the value will remain without decimals

Therefore we can buy 287 key chains for 225 A. E. D