Purchased 17851

The school purchased 80 flower pots with a total value of CZK 2,832. Smaller flower pots were 32 CZK each, larger 40 CZK. How many were there?

Correct answer:

a =  46
b =  34

Step-by-step explanation:


a+b=80
32a+40b = 2832

a+b=80
32·a+40·b = 2832

a+b = 80
32a+40b = 2832

Pivot: Row 1 ↔ Row 2
32a+40b = 2832
a+b = 80

Row 2 - 1/32 · Row 1 → Row 2
32a+40b = 2832
-0.25b = -8.5


b = -8.5/-0.25 = 34
a = 2832-40b/32 = 2832-40 · 34/32 = 46

a = 46
b = 34

Our linear equations calculator calculates it.



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