Question

A mall did a survey of grandmothers who shop with grandchildren.

Answer 1

ANSWER

`200`

Step-by-step explanation

From the given data;

The ratio of the grandmother who buys lunch : all grandmother is;

`\begin{gathered} 35:50 \\ =7:10 \end{gathered}`

To calculate the corresponding values of grandmothers who buys lunch and all grandmother;

For the 3rd column;

When all grandmother is 150.

The grandmothers who buy lunch will be;

`70+35=105`

Hence the ratio;

`105:150`

also, the next column;

`105+35=140`

For all grandmother, add 50 to 150

`50+150=200`

Hence, the ratio equals;

`140:200`

The next column for grandmothers who buy lunch;

`140+35=175`

For all grandmother;

`200+50=250`

The ratio;

`175:250`

About 200