Answer:
600
Step-by-step explanation:
because 60x10=600
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
Answer:
The direction of mathematics teacher is study about the mathematics teacher is study about it is by step instructions
FOIL
x^2+11x-9x-99
x^2+2x-99
