Question

HOW TO DO THIS QUESTION PLEASE ​

Answer 1

Answer:

34

Step-by-step explanation:

$\frac{2}{5}*85$

Long way

1. multiply the two numerators
2. multiply the two denominators
3. simplify the new fractions

$\frac{85}{1}*\frac{2}{5} \\ \\ \frac{170}{5} \\ \\ =34$

short way

-can be simplified before mulitplying

1. factor out common factors in the numerator and denominator

$\frac{85}{1} *\frac{2}{5} \\ \\ \frac{17}{1}*\frac{2}{1} =34$

Think 85 and 5 as nickels. You need 20 nickels to make 100. Subtract 100 by 85 to get 15. You get 3 nickels and 17 nickels. 17 is the common factor. Multiply 17 by 2 to get your answer.