Working alone, it would take Shandra 40 minutes to sand a table. To sand the same table, also working alone, it would take
2 answers:
Answer:
1/40+1/60=1/t is best describes Shandra's claim.
Step-by-step explanation:
Finding average of both Shandra and Kelly working time is wrong way to find the time taken when they both work together. The correct way to find time taken when they both work together is:
Hence, When both Shandra and Kelly are working together they take 24 minutes to complete the work.
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Question:
Ashley had a summer lemonade stand where she sold small cups of lemonade for $1.25 and large cups for $2.50. If Ashley sold a total of 155 cups of lemonade for $265, how many cups of each did she sell
Answer:
The number of small cups of lemonades is 98
The number of Large cups of lemonades is 57
Step-by-step explanation:
Given:
Cost of small lemonade cups = $1.25
Cost of large Lemonade cups = $2.50
Total number of lemonade cups = 155 cups
The total cost for which the lemonade is sold = $265
To Find:
Number of each types of lemonade sold = ?
Solution:
Let the number of small cups of lemonade sold be x
the number of large cups of lemonade sold be y
Then according to the question,
x+y = 155-----------------------------(1)
Then the amount earned by selling small and large lemonade cups is $265
Then
1.25x+2.50y = 265------------------(2)
From (1)
y = 155-x----------------------------------(3)
Substituting (3) in (2), we get
1.25x+ (155-x)2.50 = 265
1.25 + (387.5 -2.50x) =265
-1.25x + 387.5 = 265
-1.25x= 265 -387.5
-1.25x = -122.5
x= 98--------------------------------(4)
Substituting (4) in (3)
y = 155-98
y =57