paul and amy each improved their yards by planting daylilies and shrubs they bought their supplies from the same store paul spen
t 45$ on 3 dayliles and 3 shurbs amy spent 75$ on 3 dayliles and 8 shrubs what is the cost of one daylile and the cost of one shrub
1 answer:
Answer:
the cost of 1 daylile =9
the cost of 1 shrub =6
Step-by-step explanation:
<em>Paul spent 45$ on 3 dayliles and 3 shurbs</em>
<h3>Equation 1</h3>
3x + 3y = $45
<em>Amy spent 75$ on 3 dayliles and 8 shrubs </em>
<h3>
Equation 2</h3>
3x + 8y = $75
solve them
3x + 3y = $45
3x = 45 - 3y
x = (45 - 3y) / 3
Put values of x in equation 2
3(45 - 3y) / 3 + 8y = 75
45 - 3y + 8y = 75
45 + 5y = 75
5y = 75 - 45
5y = 30
y = 30/5
y = 6
find x,
3x + 3y = $45
3x + 3(6) = 45
3x =45 - 18
3x = 27
x = 9
So
the cost of 1 daylile =9
the cost of 1 shrub =6
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