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3 years ago

I need help 5times 10 +25-9+2times2

Mathematics

2 answers:

ehidna [41]3 years ago

4 0

Answer:

its 136

Step-by-step explanation:

Alika [10]3 years ago

3 0

Answer:

put it on the calculator

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Reggie can line a football field in 120 minutes. Rosalinda can line a football field in 80 minutes. If they work together, how m

Andrei [34K]

Answer:

If they work together, they take 48 minutes to line the football field.

Step-by-step explanation:

Given: Reggie can line a football field in 120 minutes. Rosalinda can line a football field in 80 minutes.

To find : If they work together, how many minutes does it take them to line a football field?

Solution :

If they work together,

Let the number of minutes(x) they take to line the foot ball field.

According to question,

$\frac{1}{x}=\frac{1}{120}+\frac{1}{80}$

$\frac{1}{x}=\frac{80+120}{120\times 80}$

$\frac{1}{x}=\frac{200}{120\times 80}$

Cross multiply,

$x=\frac{120\times 80}{200}$

$x=12\times 4$

$x=48$

Therefore, If they work together, they take 48 minutes to line the football field.

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