Patricia bought 4 apples and 9 bananas for $12.70. Jose bought 8 apples and 11 bananas for $17.70 at the same grocery store. What is the cost of one apple?

Viola is travelling on an inclined path up the hill which makes an angle of 6 degrees with the horizontal.

The horizontal distance covered by Viola will be equal to the horizontal component of the 170 m distance covered at 6 degrees. 

So, the horizontal distance covered by Viola = 170 cos(6) = 169.1 m

Thus, Viola covered 169.1 m horizontal distance