# Master and apprentice

Master painted the roof in 3 hours and apprentice for 4 hours. How many of roof they painted in hour and how many in three quarters of an hour?

Result

x = 7/12
y = 7/16

#### Solution:

$x=1\mathrm{/}3+1\mathrm{/}4=7\mathrm{/}12$
$y=3\mathrm{/}4x=3\mathrm{/}4\cdot 7\mathrm{/}12=7\mathrm{/}16$

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