Question

Mrs Wong planted 3 tulips for every 4 daffodils. Which of the following could be the total number of tulips and daffodils that Mrs. Wong planted.

Answer 1

this denotes proportionality, so the numbers must be proportional

in other words be multiplied by the same amount

we can chek

A.

no because

$\begin{gathered} 3\times10=30 \\ 4\times11=44 \end{gathered}$

3 and 4 should be multiplied by the same number

B.

$\begin{gathered} 3\times11=33 \\ 4\times11\ne34 \end{gathered}$

multiplying by the same number does not match the result

C.

$\begin{gathered} 3\times\frac{34}{3}=34 \\ 4\times\frac{33}{4}=33 \end{gathered}$

3 and 4 should be multiplied by the same number

D.

$\begin{gathered} 3\times12=36 \\ 4\times12=48 \end{gathered}$

3 and 4 are multiplied by the same number and the result matches

the correct option is D