Question

Simplify: $(87.65\%\times 7159.89-68.99\%\times 8939.89)\times 6.06$

Answer 1

$=(\frac{87.65}{100}\times 7159.89-\frac{68.99}{100}\times 8939.89)\times 6.66$

$=(0.8765\times 7159.89-0.6899\times 8939.89)\times \times 6.66$

$=(6275,643585-6167.630111)\times 6.66$

$108.013474\times 6.66$

$=719.36973684$

$=719.37$(approx)