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Bunuel
Danny spends $360 buying his favorite dolls. If he buys only small LemonHead dolls, which are $1 cheaper than the large LemonHead dolls, he could buy 5 more dolls than if he were to buy only large LemonHead dolls. How much does a large LemonHead doll cost?

A. $5
B. $6
C. $7.2
D. $8
E. $9

I'd plug the options for this question. Plug D first.

If large doll costs $8, then he can buy 360/8 = 45 large dolls and 360/7 = 50.something small dolls. The difference is more than 5. Discard.

Now, increase the price of the large doll to decrease the difference.

If large doll costs $9, then he can buy 360/9 = 40 large dolls and 360/8 = 45 small dolls. The difference is 5, which is what we wanted.

Answer: E.
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