Question

The sum of four number is 630. If the ratio of the first and second number is 2:3, ratio of second and third number is 4:5 and the ratio of the third and fourth number is 6:7,then find the sum of first and last number?

• A. 287
• B. 306
• C. 316
• D. 327

Answer 1

Answer:

B. 306

A+B+C+D=630 A:B=2:3 B:C=4:5 C:D=6:7 A:B:C:D=48 : 72 : 90 : 105 = 16:24:30:35 105 units= 630 1 unit= 6 A+D= 51*6= 306