Question

A+B=300 AxB=90
B=C x 9 B=Cx3
C=D+13 C=D:10
D=E:6 D-E=250
E:6=19 E:10=5

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Answer 1

E=19x6=114
D=114:6=19
C=19+13=32
B=32x9=288
A+288=300
A=300-288
A=12



E=5x10=50
D-50=250
D=250+50
D=300
C=300:10=30
B=30x3=90
Ax90=90
A=90:90
A=1