lets get checked

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2011 1

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2011 1
#### 138,000
\( 120 \times 0.25 = 30 \)
\( 120 - 30 = 90 \)
\( 90 \times 0.08 = 7.20 \)
\( 90 + 7.20 = 97.20 \)
#### 97.20
\( \frac{180 \text{ miles}}{3 \text{ hours}} = 60 \text{ miles per hour} \)
\( \frac{420 \text{ miles}}{60 \text{ miles per hour}} = 7 \text{ hours} \)
\( SA = 2(lw + lh + wh) \)
\( SA = 2(8 \times 5 + 8 \times 12 + 5 \times 12) \)