Homework - jumps

Sasha jumped 121 cm Peter 4 cm more than Jirka.
Jirka 6 cm less than Misha. Misha 7 cm less than Filip and Filip half as much Sasha and Petr together. How far each jumped?

Correct answer:

Saša:  121 cm
Petr:  103 cm
Jirka:  99 cm
Míša:  105 cm
Filip:  112 cm

Step-by-step explanation:

Petr#cm=4 + 4-7-6+121 - 7 - 6= 103 \ \text{cm}
Jirka#cm=4-7-6+121 - 7 - 6= 99 \ \text{cm}
S=121 P=4+J J=M6 M=F7 F=(S+P)/2  F=(S+P)/2=(4+J+S)/2=(4+M6+S)/2=(4+F76+S)/2 F=(4+F76+S)/2 2F=4+F76+S F=476+121=112 cm  M=F7=105 cm  J=M6=99 cm  P=4+J=103 cm

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