We know that
<span>An electrician can wire a house in ------------> 20 hours
so
100%----------------> 20 hours
X-------------------> 12 hour
x=12*100/20----> x=60%
that means
</span><span>the apprentice in 12 hours complete the (100-60)----> 40%
</span>the apprentice in 12 hours complete -------> 40%
x hours------------------------------------> 100%
x=100*12/40-----> x=30 hours
the answer is
30 hours
You do 5*7=35 and then subtract 35-30 to get your answer 5 less species
(f+g)(5)=33 is the answer
Answer:
D if i'm wrong i'm so sorry
Step-by-step explanation: