Suppose you$$ve been asked to write a segment of code that determines the cost of riding the bus based on the value of a variable age of type int. $($You may assume age is nonnegative.$)$ If age is less than $18,$ the cost is $$1\mathrm{.}50.$ If age is $65$ or more, the cost is $$2\mathrm{.}00.$ For all other values of age, the cost is $$2\mathrm{.}50.$

A friend of yours submitted the following code, and the instructor knocked off marks for "inappropriate use of branching constructs and redundant Boolean expressions". Rewrite the code in light of the comments from the instructor. You should only change lines $1,3$ and $5,$ the other lines should remain unchanged. Do not change the order in which the comparisons are made, and do not introduce blocks $(\{\}).$