Question

Hello! i need help with question 31. i am not allowed to use a calculator and i need to show all steps. i have already done the first part which is the multiplication. i found 1200. my problem is that i don’t know how to do division without a calculator so kindly explain the steps to me

Answer 1

Let:

a = Cost of each apple

n = Number of apples

T = Total cost

so:

$\begin{gathered} a\cdot n=T \\ if \\ n=6 \\ T=80 \\ so\colon \\ 6a=80 \end{gathered}$

Solve for a:

$\begin{gathered} a=\frac{80}{6} \\ a=\frac{40}{3} \end{gathered}$

Therefore:

$\begin{gathered} T=a\cdot n \\ T=\frac{40}{3}\cdot15 \\ T=200 \end{gathered}$

Answer:

15 apples cost 200 cents

---------------------------

6------------>80

15------------>x

$\begin{gathered} \frac{6}{15}=\frac{80}{x} \\ x=\frac{15\cdot80}{6} \\ x=\frac{1200}{6} \\ \end{gathered}$

Using long division: