Encyclopedias 83005

The seller sells books for 20 euros and encyclopedias for 50 euros. How many books and encyclopedias did he sell if he sold 121 books? He won €8,000 for both types.

Correct answer:

k =  -65
e =  186

Step-by-step explanation:

20k+50e=8000 k+e=121  20 k+50 e=8000 k+e=121  50e+20k=8000 e+k=121  Row2501 Row1Row2 50e+20k=8000 0.6k=39  k=0.639=65 e=50800020k=50800020 (65)=186  e=186 k=65



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