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Janet can make 1/2 of a necklace in 20 minutes. At this rate, how many necklaces can Janet make in 2 hours?

Sagot :

sofad2

Answer:

3 necklaces

Step-by-step explanation:

2 hours = 120 minutes

1 necklace in 40 minutes

120/40 = 3

3 necklaces

Answer:

3 necklaces

Step-by-step explanation:

2 hours needs to be in the same units as the 20 minutes

2 hours = 2 * 60 minute = 120 minutes

Now we can use ratios to solve

1/2 necklace           x necklaces

-------------------- = ----------------

20 minutes              120 minutes

Using cross products

1/2 * 120 = 20x

60 = 20x

Divide by 20

60/20 = 20x/20

3= x