Ken bought a new car with 10 optional features. Each optional feature costs either $25.99 or $110.48. If he paid $597.86 for all optional features, how many of each type did he buy?

Assume x features costs $25.99, then (10-x) features costs $110.48.

So 25.99x+110.48 (10-x)=597.86

1104.8-84.49x=597.86

84.49x=506.94

x=6

10-x=4

Therefore 6 features of $25.99 and 4 features of $110.48

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