The Fandago Bike Company specializes in children’s bikes. Each month, the company must keep track of their costs and revenue. Their costs consists of fixed costs that include rent, utilities, and workers’ salaries, as well as the variable cost to make the bikes. You can represent the company’s costs using the function C(x) = 25x + 900. You can represent the company’s revenue for every bike sold using the function R(x) = 100x - x².

Due to the rising costs of running a business, the Fandago Bike Company anticipates fixed costs in the next year to be $1800 per month, whereas the cost to make each bike will stay at $25 per bike.

Determine the number of bikes the company now needs to make for one month to break even when the revenue from selling bikes remains the same.