HELP I HAVE TO FINISH IN 2 HOURS shannon and sarah are mowing a field. shannon can finish mowing by herself in 2 hours. sarah can finish in 4 hours. how long will it take them to mow the field together?

1h 20m

Step-by-step explanation:

Let the total amount of work be x.

Shannon:

2h = x

1h = x

So basically Shannon does  x work per hour.

Sarah:

4h = x

1h = x

So basically Sarah does x work per hour.

Together:

1h = x + x

    = x + x

    = x

Amount of time spent = x ÷ x

                                     = x × x

                                     = h

                                     = 1h

                                     = 1h 20m

percentage - 25%

probability - 0.25

we know,

total amount of students in class = 20

total boys = 10

total girls = 10

no of girls who wear glasses = 10/2 = 5

probability of choosing a girl with glasses is =

number of girls wearing glasses/total number of students in the class = 5/20

thus, percentage of selecting a girl wearing glasses will be

= 5/20 × 100

= 5 × 5

25%

therefore,

probability will be 0.25

happy to

pls mark as brainliest

definitely a. the others have almost all data points on one side of the line.

step-by-step explanation: