Respuesta :
Answer:37 and half hrs
Step-by-step explanation:
This is what I get
Myra: 50/2= 25 bulbs/hr.
Francis: 45/3= 15 bulbs/ hr
25+15= 40/hr. Together per hr
Need to find 150 bulbs how many hrs
40/1=150/t
40t=150
T= 150/4
T= 37.5
37hrs and 1/2
It takes 37.5 hours to plant 150 bulbs.
What is the unitary rule?
The unitary approach is a way of solving trouble by means of first locating the fee of a single unit, and then locating the vital fee by multiplying the unmarried unit value.
The unitary approach is a way of fixing a problem with the aid of first locating the fee of an unmarried unit, and then finding the important fee by means of multiplying the single unit price.
Myra: 50/2= 25 bulbs/hr.
Francis: 45/3= 15 bulbs/ hr
25+15= 40/hr.
40/1=150/t
40t=150
T= 150/4
T= 37.5
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