1.

x = \frac 10,500 - \frac 30,000 5 \frac 30,000 2 \times 100

Answer»

[(10500 - 30000/5)/(30000/2)]*100

= [(10500 - 6000)/(30000/2)]*100

= (4500/15000)*100

= 4500/150

= 30



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