Question

nou a•b=90,b=c•3,c=d:10,d-e=250,e:10=5

Answer 1

e÷10=5=>e=5×10=50; d-e=250<=> d-50=250 =>d=250+50=300; c=d÷10=300÷10=30; b=c×3=30×3=90; a×b=90<=>a×90=90=>a=1; {a=1;b=90;c=30;d=300;e=50}