Kristen spent $25 to buy 9 flowers for her mother on May 10.She bought roses which cost $3 and daisies which cost $2.how many roses and how many daisies did she buy. step by step

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03-11-2022
Mathematics

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Kristen spent $25 to buy 9 flowers for her mother on May 10.She bought roses which cost $3 and daisies which cost $2.how many roses and how many daisies did she buy. step by step

Sagot :

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RhonanL755606 RhonanL755606 · Answer 1 · 2022-11-03T02:47:56-04:00

Kristen spent $25 to buy 9 flowers (F) for her mother on May 10. She bought roses (R) which cost $3 and daisies (D) which cost $2. How many roses and how many daisies did she buy.

____________________________________

Total number of roses bougth

F= 9

F = R + D (I)

_______________

total cost (C)

C= 25

C= R *3 + D*2 (II)

_________________

Solving the two equations system by substitution

F = R + D

9= R + D

D= 9 - R

Replacing in (II)

25 = R *3 + (9 - R)*2 (II)

25 = 3*R + 18 - 2R

R = 25- 18

R=7

D= 2

__________________

Answer

Kristen bought 7 roses and 2 daisies

Sagot :

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