Answer:
2 pieces of wall/1 hour
Step-by-step explanation:
1) since time is an independant variable it will be the denominator
so 1/5÷1/10
when dividing fractions remember that the sign changes to multiplication and the second fraction reciprocates (turns upside down)
so
1/5*10/1=10/5
Jacob paints 10/5ths of the wall (2), in an hour