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A baker sold 33 loaves of bread in the morning. In the afternoon, he sold 60% of the remainder. As a result, the number of loaves of bread left became 1/8 of the number of bread he had at first. How many loaves of bread did the baker have at first?

 Aug 19, 2016
 #1
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Original number = 'x'

(x-33)    #left after morning sales

.4(x-33) = # left after afternoon sales = 1/8x

.4x - 1/8x =13.2

x=48 loaves at start

 Aug 19, 2016
 #2
avatar+39 
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Say that the number of loaves of bread is N.

Morning sales are M = 33

Afternoon sales are A = 0.6 * (N - M)

And the rest is R = 1/8 * N

 

M + A + R = N

 

\(33 + 0.6*(N-33)+{1\over{8}}*N=N\)

 

\(33 + 0.6N-19.8+0.125N=N\)

 

\(13.2+0.725N=N\)

 

\(13.2=0.275N\)

 

\(N=13.2/0.275=48\)

 

Let's check: 33 sales leaves 15 loaves.

60% of 15 is 9 which leaves 6 loaves.

6 times 8 equals 48.

 Aug 19, 2016

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