Question

5 nuci si 2 covrigi cantaresc 285 grame
4 covrigi si 2 nuci cantaresc 370 grame
cat cantareste o nuca si cat cantareste un covrig
cat cantaresc 100 de nuci si 10 covrigi

Answer 1

Răspuns:

Sper ca te-am ajutat! Mult noroc la scoala!

Answer 2

5 nuci............2 covrigi............285 grame |•4

2 nuci.............4 covrigi.............370 grame|•2

un covrig?

o nuca?

100 nuci........10 covrigi............?

=====================================

20 nuci.................8 covrigi.................1140 grame

4 nuci....................8 covrigi.................740 grame

-------(-)

16 nuci....../...........400 grame

1 nuca= 400:16=25 grame

====================================

2•25+4 covrigi=370 grame

4 covrigi= 370-50=320 grame

1 covrig= 320:4=80 grame

V: 5•25+2•80=285 grame