12 boys and 27 girls
1) Add 4 to 9. 13
2) 39 divided by 13 is 3
3)Multiple 3 to 4 boys and 9 girls. 3x4 is 12 boys, 3x9 is 27 girls
Hope this helps!
You dived 4,005/16
then you will get your answer
Answer:

Step-by-step explanation:
Given

Required
How it'd be displayed on a calculator
Standard calculators, today are built to always convert huge numbers or extremely small number to scientific notations;
This was done to allow the calculator fit each values on its screen
is such a big number that it'll require the calculator to display it using scientific notations;
So, basically we have to convert
to scientific notaton;
This is achieved by replacing
with 
So,
is equivalent to 
2x + 1
You can find that by switching the signs in the second set of parenthesis and then adding.
Let
x------> the <span>remaining ice cream
we know that
3/10------> 0.30
so
x=1-0.30-0.40-----> x=1-0.70------> x=0.30 gal------> 3/10 gal
the answer is
3/10 gal</span>