We are given the total earnings of the school, $2800.
The earnings of each grade level are as follows:
2nd grade = $200
5th grade = $200
kindergarten = 2 * $200 = $400
4th grade = 2 * $200 = $400
1st grade = 3rd grade = x
The amount which is left for us to determine is the earnings of the first and third grade. This can be determined by equating all earnings to the total school earnings and let 1st and 3rd grade be the variable x:
$2800 = $200 + $200 + $400 + $400 + x + x
$2800 = $1200 + 2x
$1600 = 2x
x = $800
Therefore, 1st grade and 3rd grade earned $800 each. <span />
Answer:
C.30
Step-by-step explanation:
area of a triangle is 1/2 the base times the height
Hi. This can be answered with a ratio. If 1 litre = 1 kilogram then 1.75 litres = unknown grams. So we know that there are 1000 grams in 1 kilogram so 1.75 litres would be 1750 grams. Its just a matter of cross multiplying.
Step-by-step explanation:
a=2
b=4
c=x
a×b=c
2×4=8
c=8
answer is eight
Answer:
peanuts are more expensive by $1.00.
Step-by-step explanation:
∵ The cost of eight pounds of peanuts = $24.00
∴ The cost of one pound of peanuts = 
= $3.00 per pound
∵ The cost of six pounds of walnuts half as much = 
= $12.00
∴ the cost of one pound of walnuts = 
= $2.00 per pound
Difference in the cost per pound = $3.00 - $2.00 = $1.00
Therefore, peanuts are more expensive by $1.00.
