Read the following table carefully and answer the questions given below. The…

Concept: In a table-based data-interpretation ratio question, first isolate the exact sub-population each part of the question asks for from the given row data — a Males : Females ratio splits a town's total into parts (one part = total ÷ sum of ratio parts), and the graduate/total relationship gives non-graduates as total minus graduates. Only after extracting every required quantity separately should the values be combined into the asked ratio and reduced to lowest terms.

1. Town A: total = 400, Males:Females = 3:5, so the ratio splits the total into 8 parts; one part = 400 ÷ 8 = 50, giving females = 5 × 50 = 250.

2. Town D: total = 360, Males:Females = 11:7, so 18 parts; one part = 360 ÷ 18 = 20, giving females = 7 × 20 = 140.

3. Town E: total = 550, Males:Females = 6:5, so 11 parts; one part = 550 ÷ 11 = 50, giving females = 5 × 50 = 250.

4. Total females in A, D and E together = 250 + 140 + 250 = 640.

5. Town B: total = 250, graduates = 130, so non-graduates = 250 − 130 = 120.

6. Town C: total = 180, graduates = 120, so non-graduates = 180 − 120 = 60.

7. Total non-graduates in B and C together = 120 + 60 = 180.

8. Required ratio = 640 : 180. Dividing both terms by their HCF, 20, gives 32 : 9.

Cross-check: using the same splits, males work out to 150 (A), 220 (D) and 300 (E); adding each town's males and females reproduces its given total exactly — 150 + 250 = 400, 220 + 140 = 360, 300 + 250 = 550 — confirming the Males:Females splits used above were applied correctly.

Hence the ratio of the total number of females in A, D and E together to the total number of non-graduates in B and C together is 32 : 9.