Let n represent the # of students in the class.
Then 8n candies + 4 candies = 5n candies + 40 candies
Combining like terms: 3n = 36 candies. Solving for n, n = 12 students.
Answer:
12.96
Step-by-step explanation:
try to found 20% of 10.8 and add it to 10.8
20% equal to 4quarter
4 quarter of 10.8 is 2.16
Answer:
_2
Step-by-step explanation:
Given :
Kiara spent $28 on 4 ribbons and 5 balloons.
Sarah spent $28 on 8 ribbons and 3 balloons.
To Find :
The cost of each ribbon and each balloon.
Solution :
Let, cost of each ribbon is x and balloon is y.
For situation 1 :
4x + 5y = 28 ...1)
For situation 2 :
8x + 3y = 28 ...2)
Multiplying equation 1) by 2 and subtracting equation 2) by it :
2( 4x + 5y ) - ( 8x + 3y ) = 2 × 28 - 28
10y - 3y = 28
y = 4
Putting value of y in equation 1) , we get :
Therefore, the cost of each ribbon and each balloon is $2 and $4 respectively.
Answer:
-5
Step-by-step explanation:
The water level of the river in May was 30cm below the mark and it was recorded as -30.
After the rains, the water level went up by 25 cm. The water level will be recorded as:
-30 + 25 = -5