19. There were 20 drinks in a cooler.
Joey drank 15% of the drinks
• Sandra drank of the drinks
• Hannah drank of the drinks.
• Tammy drank 30% of the drinks.
How many drinks are left in the cooler?
AO B.2
C. 5
D. 9
What is The answer

For this case we have that the complete question is:

There were 20 drinks in a cooler. Joey drank 15% of the drinks. Sandra drank 1/5 of the drinks. Hannah drank 1/4 of the drinks. Tammy drank 30% of the drinks. How many drinks are left in the cooler? a 0 b 2 c 5 d 9

We propose a rule of three:

20 ---------> 100%

x ------------> 15%

Where the variable "x" represents the amount of drinks equivalent to 15%.

So, Joey drank 3 drinks.

On the other hand, we have that Sandra drank of the drinks:

Thus, Sandra drank 4 drinks.

In addition, Hannah drank of the drinks:

So Hannah drank 5 drinks.

Finally, Tammy drank 30% of the drinks:

20 ---------> 100%

y ------------> 30%

Where the variable "y" represents the amount of drinks equivalent to 30%.

So Tammy drank 6 drinks.

Adding up we have:

So:

Thus, 2 drinks remain in the refrigerator.

Option B

the answer is 13

step-by-step explanation:

5*5=25

12*12=144

25+144=169

169^2=13

113.1

step-by-step explanation:

v=4

3πr3=4

3·π·33≈113.09734