Determines 38523

We have 30 flowers, and each one has three or four petals. They have a total of 102 chips. How many flowers have four petals? Z represents the number of flowers with 4 petals. Choose the expression that determines the number of flowers with 3 petals.

Correct answer:

x =  18
z =  12

Step-by-step explanation:


x+z = 30
3x+4z=102

x+z = 30
3·x+4·z=102

x+z = 30
3x+4z = 102

Pivot: Row 1 ↔ Row 2
3x+4z = 102
x+z = 30

Row 2 - 1/3 · Row 1 → Row 2
3x+4z = 102
-0.33z = -4


z = -4/-0.33333333 = 12
x = 102-4z/3 = 102-4 · 12/3 = 18

x = 18
z = 12

Our linear equations calculator calculates it.



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