Answer:
J=0.15
S=0.05
Step-by-step explanation:
4J+2S=0.70
4J+5S=0.85
Using elimination method
4J+2S=0.70 (1)
4J+5S=0.85 (2)
Subtract (1) from (2)
3S=0.15
Divide both sides by 3
3S/3=0.15/3
S=0.05
Substitute s=0.05 into (1)
4J+2S=0.70
4J+2(0.05)=0.70
4J+0.10=0.70
4J=0.70-0.10
4J=0.60
Divide both sides by 4
4J/4=0.60/4
J=0.15
CHECK:
4J+2S=0.70
4(0.15)+2(0.05)=0.70
0.60+0.10=0.70
0.70=0.70
4J+5S=0.85
4(0.15)+5(0.05)=0.85
0.60+0.25=0.85
0.85=0.85
