A student adds \(\tfrac35\) unit of a solution, then adds 0.4 unit of the same solution, and finally removes \(\tfrac1{10}\) unit. What is the net change in the quantity of the solution?
increase of 0.9 unit
Net change: \(\tfrac35+0.4-\tfrac{1}{10} = 0.6+0.4-0.1 = 0.9\).
Hence, the net change in the quantity of the solution is an increase of 0.9 unit.
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The value of \(\frac{1}{4} + \frac{{[{{(20.35)}^2} - {{(8.35)}^2}] \times 0.0175}}{{{{(1.05)}^2} + (1.05)(27.65)}}\) is:
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What is the value of x, if \(5\left( {1 - \frac{x}{5}} \right) - (5 - x) - \frac{1}{{200}}{\rm{of (20 - x) = 0}}{\rm{.08}}\) ?
