Sandra is paid an hourly base rate for babysitting up to two children a day, and an additional $20\%$ per hour for eac

Sandra is paid an hourly base rate for babysitting up to two children a day, and an additional $20\%$ per hour for each additional child. If her hours are rounded up to the next full hour, how many hours was Sandra paid for last week?

1. One day last week, Sandra was paid $\$51$ to babysit $3$ children for $5$ hours.

2. Sandra was paid a total of $\$108.80$ last week and never babysat more than $3$ children at once.

Answer: C

Source: Princeton Review

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