x1 - R was spent in May
x2 - R was spent in June
x3 - R was spent in July
Construct the system of equations:
x1=1.5∗x2x2=x3−50x1+x2+x3=575
Since x2=x3−50 and x1=1,5∗x2 thus:
1.5∗(x3−50)+x3−50+x3=575
1.5∗x3+x3+x3=575+50+75
3.5∗x3=700
x3=200
Find x2 :
x2=x3−50=200−50=150
Find x1 :
x1=1.5∗x2=1.5∗150=225
Answer:
May: x1 = 225
June: x2 = 150
July: x3 = 200
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