Q10. If a : b = 5 : 7 and b : c = 8 : 9, what is the combined ratio a : b : c?Mathematics — Ratio And Proportion — Question 10 of 75A. 40 : 56 : 63B. 40 : 50 : 63C. 5 : 7 : 9D. 35 : 49 : 56Practice more Mathematics MCQs for entrance exam preparation on Examora.io.← Previous Question Next Question →