# Chapter 1 - Problem Solving and Critical Thinking - 1.2 Estimation, Graphs, and Mathematical Models - Exercise Set 1.2 - Page 26: 36

estimated value = 150 actual value = 169.62

#### Work Step by Step

The simplified calculation after rounding off is $\frac{0.5 * 90}{0.3}$ = 150 The actual calculation is $\frac{0.47996 * 88}{0.249}$ = 169.62

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