Jack has 12 pencils and 7 pens.how many more pencils than pens does he have

Mathematics

2 answers:

7nadin3 [17]3 years ago

8 0

12-7 = 5, therefore, there are 5 more pencils than pens.

ioda3 years ago

3 0

Twelve pencils minus the seven pens equals five so the the difference would be five. jack has five more pencils than he does pens.

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kelly can paint her father's shed in five hours, working alone. working together, she and her sister sharon can complete the tas

natali 33 [55]

According to the solving the correct expression of the given data is:

S = 5T/(T - 5).

<h3>What does a math expression mean?</h3>

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<h3>According to the given information:</h3>

Let S be the number of hours it would take Sharon to paint the shed alone.

Kelly alone can paint the shed in T hours,

so she can paint (1/T) of a shed per hour.

Sharon alone can paint (1/S) shed per hour, so, working together.

They can Paint:

(1/T)+(1/S)

it takes them five hours to paint the shed together, they can paint (1/5) shed per hour.

$$\frac{1}{S}+\frac{1}{T}=\frac{1}{5}$\\$