Question

If it takes you the same amount of time to wash 30 cups as it does to wash 45 plates,how many cups could you wash in the same amount of time it takes to wash 15 plates ?
a) 5 cups b) 15 cups c) 10 cups d) 23 cups

Answer 1

The answer is option c) 10 cups.

Step-by-step explanation:

We can use the unitary method to find the answer to this question.

According to the question,

the number of cups washed in the same time as 45 plates = 30

So, by the unitary method,

the number of cups washed in the same time as 1 plate =  $\frac{30}{45}$

Therefore, the number of cups washed in the same time as 15 plates

= $\frac{30}{45} \times 15$                                                                                                                              

=  $\frac{30}{3}$

= 10