Question

Jeremiah writes the expression(40) - 1/10 times 40). to determine the number of questions answered correctly. Which is an equivalent expression?

Answer 1

`\bf 40-\cfrac{1}{10}\cdot 40\implies \stackrel{\mathbb{PEMDAS}}{40-\cfrac{40}{10}}\implies 40-4\implies 36`

Answer 2

36

Explanation:

we have the equation:

`40-(1)/(10)*40\\`

the fist thing we have to solve is the multiplication of 1/10 *40 since it has priority over the sum:

`40 -(40)/(10)`

Now we solve fot the quotient of 40/10

`= 40 - 4`

and finally, we have

`40 -(1)/(10)*40 = 36`