Ask question

Ask question

All categories

murzikaleks [220]

3 years ago

5

three postal workers can sort a stack of mail in 30 minutes, 30 minutes, and 60 minutes, respectively. find how long it takes th

em to sort the mail if all three work together.

2 answers:

mote1985 [20]3 years ago

8 0

Answer:

Step-by-step explanation:

t/30+t/30+t/60=1

2t/60+2t/60+t/60=1

5t/60=1

5t=60

t=12 minutes

OverLord2011 [107]3 years ago

5 0

Answer:

it will take about 1/3 of the time (10 minutes)

Step-by-step explanation:

You might be interested in

A large cheese pizza costs $7.50. Each additional topping for the pizza costs $1.35. If the total bill for the pizza Sally order

konstantin123 [22]

Answer: She ordered 4 toppings.

Step-by-step explanation:

Given: Total cost of pizza = $ 12.90

Cost of pizza =$7.50

Price per topping = $1.35

Let x = Number of toppings,

Total cost of pizza = (Cost of pizza) + (price per topping) × (Number of topping)

$12.90= 7.50+1.35x\\\\\Rightarrow\ 1.35x=12.90-7.50\\\\\Rightarrow\ 1.35x=5.4\\\\\Rightarrow\ x=\dfrac{5.4}{1.35}\\\\\Rightarrow\ x=\dfrac{540}{135}=4$

hence, she ordered 4 toppings.

5 0

2 years ago

Solve for x: x/3= 7<br><br> x= 21<br> x= 12<br> x= 7/3<br> x= 11

myrzilka [38]

Answer:

7÷3=2 1/3...

×=7/3...

4 0

3 years ago

Read 2 more answers

One<br> Find the product:<br> (n - 5)(n-1)

Elina [12.6K]

The answer is n^2-6n+5

4 0

3 years ago

Read 2 more answers

9. Solve the equation. Check your solution, if possible.<br> 1.5x + 1.3x = -8.4

Maksim231197 [3]

Answer:

-3

Step-by-step explanation:

1.5x + 1.3x = -8.4

2.8x = -8.4

x=-3

6 0

2 years ago

Read 2 more answers

Select the true statement(s):

Gre4nikov [31]

Answer:

The true statement is C because between -4 and 14 is 10

Step-by-step explanation:

Plz mark brainliest

6 0

2 years ago

Read 2 more answers