Answer:
14 adults
Explanation:
sum the parts of the ratio , 4 + 22 = 26 parts
divide the total number by 26 to find the value of one part of the ratio
91 ÷ 26 = 3.5 ← value of 1 part of the ratio , then
4 parts = 4 × 3.5 = 14
then number of adults on bus tour was 14