13-15 need EXPLAINATION while 16-17 need Solution

33 It is the equality of two ratios. A. ratio C. equality B. proportion D. none of these 0 14. It is the comparison of two quantities. A. ratio C. equality B. proportion D. none of these 0 15. The positive root of the product of two numbers is the A. arithmetic mean C. geometric mean B. geometric proportion D. proportion B. With justification: Nos. 16-35. Read each item carefully. Determine what is asked in each Blacken the circle corresponding to the letter of your answer. On the blank provided, put your ition by explaining in JUST ONE OR TWO SENTENCES or showing the solution of your choice. ASURES ARE ALLOWED. 16. /fa : b = 5 : 9 and b : c=4 : 7, find a : b : c. 30 32 C. - A. 34 B. 31 D. 17. Divide 672 in the ratio 5 : 3. C. 273,456 A. 252,420 D. 287,420 B. 254,487