Answer:
Gerry will need to knit 135 stitches wide and 351 rows long for make a scarf that is 18 inches wide and 36 inches long.
Step-by-step explanation:
1. Let's review the data given to us for solving the question:
Measures of the gauge swatch = 4 inches * 4 inches
Number of stitches wide of the gauge swatch = 30
Number of rows long of the gauge swatch = 39
2. How many stitches wide will she need to knit in order to make a scarf that is 18 inches wide and 36 inches long?
Using Rule of Three Simple we can found that value, this way;
Number of stitches wide for 18 inches wide = (18 * 30)/4
Number of stitches wide for 18 inches wide = 540/4 = 135
Gerry will need to knit 135 stitches wide for make a scarf that is 18 inches wide.
We can found the same way, the rows long:
Number of rows long for 36 inches long = (36 * 39)/4
Number of rows long for 36 inches long = 1,404/4 = 351
Gerry will need to knit 351 rows long for make a scarf that is 36 inches long.
