Homework

In the crate are 18 plums, 27 apricot, and 36 nuts. How many pieces of fruit were left in the crate when Peter took 6 ninth:

1. nuts
2. apricots
3. fruit
4. drupe

Correct answer:

a =  45
b =  27
c =  15
d =  15

Step-by-step explanation:

$$\begin{gathered} n=18+27+36=81 \\ a=18+27=45 \end{gathered}$$

$b=a-\frac{6}{9}\cdot 27=45-\frac{6}{9}\cdot 27=27$

$c=a-\frac{6}{9}\cdot a=45-\frac{6}{9}\cdot 45=15$

$d=a-\frac{6}{9}\cdot a=45-\frac{6}{9}\cdot 45=15$

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