# Math

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Monday, Mr. C stacked a display case of 80 heads of lettuce. By end of day, some were sold.

Tuesday Mr. C counted lettuce left and decided to add an equal number of lettuce (**hint - he doubled the leftovers).  At end of Tuesday, he sold the same number as Monday.

Wednesday Mr. C tripled lettuce left. He sold the same number that day too. At end of day, there were no lettuce left.

How manylettuce were sold each day?

Thx

• Math -

if he started with h heads of lettuce, and sold s,

end of Monday he had h-s
on Tuesday, he had 2(h-s) and sold s, leaving 2h-3s
On Wednesday, he had 3(2h-3s) and sold s, leaving 0.

6h-9s-s = 0
6h = 10s

So, he started out with some multiple of 10 and 6, let's say 30

h=5,s=3

Or, he could have started out with

150, so h=25, s=15

• Math -

Oops. I forgot that he started with 80.
So,

6*80 = 10s
s = 48

• Math -

Thanks!This really helped

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