Problem: if 3 girls can do 3 times of a particular work in 3 days , then , 7 girls can do 7 times of that work in
Rationale: answer : option ' d ' that is , 1 girl can do one time of the work in 3 days . therefore , 7 girls can do 7 times work in the same 3 days itself .
annotated_formula: multiply(divide(3, 3), 3)