Pinwheels 13751

Mom bought desserts for her birthday party. The pinwheel cost CZK 14, and the Indian women CZK 11. She paid 201 crowns for 15 desserts. How many pinwheels did she buy, and how many Indians?

Correct answer:

i =  3
v =  12

Step-by-step explanation:


14v+11i = 201
v+i=15

14·v+11·i = 201
v+i=15

11i+14v = 201
i+v = 15

Row 2 - 1/11 · Row 1 → Row 2
11i+14v = 201
-0.27v = -3.27


v = -3.27272727/-0.27272727 = 12
i = 201-14v/11 = 201-14 · 12/11 = 3

i = 3
v = 12

Our linear equations calculator calculates it.



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