The following pie chart shows the number of bags sold by 7 different shops during a month as percentages of the total number of bags sold during this month by these 7 shops taken together.

If the total number of bags sold during the given month by these 7 shops taken together was 1400, then what was the total number of bags sold by S3 and S7 taken together?

224

Total number of bags sold by S3 and S7 = \(\frac{9 + 7}{100}\) × 1400

= 224