MCQ Practice Mathematics 📖 If a : b = 4 : 7 and b : c = 5 : 6, then a : b : c =? A 20 : 35 : 30 B 20 : 35 : 42 C 24 : 42 : 30 D 7 : 6 Favorite Practice Add to Book Explanation & Answer Detailed explanations and answers are restricted. Unlock full access by logging in to your account. 🔒 Unlock the detailed explanation and answers Log In / Sign Up PreviousIf 36 students in a class are female and the ratio of female students to male students is 9 : 11, what percentage of the clas... NextIf Anwar's salary is 25% greater than that of Babu, what is the ratio of the salary of Babu and Anwar?