The first worker can make 5 chairs in 3 hours. The second worker can make 7 chai

Question

The first worker can make 5 chairs in 3 hours. The second worker can make 7 chairs in 4 hours. Which worker is faster? Answer:

Question 2 Not yet answered Marked out of 1.00 Not flaggedFlag question Question text What is the combined speed of the two furniture makers in the above question? Don't forget to include the correct units with the answer (the unit of time is assumed to be the "hour"). Answer:

Question 3 Not yet answered Marked out of 1.00 Not flaggedFlag question Question text In the above problem, how long will it take the two workers to manufacture 10 chairs? Don't forget to show units. Answer:

Question 4 Not yet answered Marked out of 1.00 Not flaggedFlag question Question text The density of steel is 503 lb / cu. ft. What is the mass (in kg) of a steel cylinder puck, whose height is 3 cm, and whose radius is 15 cm?

Explanation / Answer

a)1st worker =5/3 chair/hr =1.67

2nd worker =7/4 chair/hr =1.75

2nd is faster (ans)

b) combined speed =5/3+7/4 =41/12 =3.416 chair/hr (Ans)

c)for 10 chairs

10/(41/12) =2.926 hr =2hr 55 min (ans)

d)V =pi*r^2*h =3.14*(15/30.48)ft^2 *3/30.48 =0.0748 ft^3

So mass=dV =503*0.0748=37.649 lb (ans)

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