Question

The Xtra Cleen Car Wash washed 256 cars in 6 hours. At that rate, how many cars can they wash in 10 hours? Select one: a. 426 b. 266 c. 153

Answer 1

You can write and solve the proportion

$\dfrac{256\,\text{cars}}{6\,\text{hours}}=\dfrac{x\,\text{cars}}{10\,\text{hours}}\\\\x\,\text{cars}=(10\,\text{hours})\cdot\dfrac{256\,\text{cars}}{6\,\text{hours}}=426\frac{2}{3}\,\text{cars}$

The appropriate choice is ...

... a. 426