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julsineya [31]
3 years ago
10

Please help I don’t understand this

Mathematics
2 answers:
Illusion [34]3 years ago
8 0

people. Houses Hours

5. 3 12

4. 5. ?

Cross multiply and get the reciprocal

4*3/5*5/12

12/25 *1/12

= 25

dimaraw [331]3 years ago
6 0

Answer: 25 hours

Step-by-step explanation:

Let r = rate, t = time

From 1st sentence,

5r x 12 = 3

60r = 3

r = 3/60 = 1/20

From the next,

4r x t = 5

4 x 1/20 x t = 5

4/20t = 5 = 25

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