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\frac{4800\left(1+0\right)}{4000+800}
Multiply 0 and 25 to get 0.
\frac{4800\times 1}{4000+800}
Add 1 and 0 to get 1.
\frac{4800}{4000+800}
Multiply 4800 and 1 to get 4800.
\frac{4800}{4800}
Add 4000 and 800 to get 4800.
1
Divide 4800 by 4800 to get 1.
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