30 less than 10 is 30 - 10 which is -20
hope this helps!!<span />
So she has used two kinds of sugar, brown and powdered.
She used

cups of brown sugar and

cups of powdered sugar: we need to add the two numbers:

+

= 2+1+

=3

so the correct answer is 4.5
Im sorry if I misunderstood the problem but heres my take.
Answer:
1155 for the cost of the people and 1250 for the total including the $95
Step-by-step explanation:
Multiply it ( 77 x 15 )
then add the answer to the $95 ( 95 + N )
= $N
U can find the reciprocal of a number by flipping the number.
example : the reciprocal of 1/5 is 5/1....the reciprocal of 2/3 = 3/2.
the reciprocal of x = 2/7.....that means x = 7/2
5 / (7/2) = when dividing fractions, flip what u r dividing by, then multiply
5 * 2/7 =
10/7 or 1 3/7 <==
3 (10x+7) is equal to 30x+21