Mathematics
Two numbers are in the ratio 7 : 11. If 7 is added to each of the numbers, the ratio becomes 2 : 3. The smaller number is:
39
49
66
77
Related Questions
The ratio of the number of boys and girls in a school of 720 students is 7 : 5. How many more girls should be admitted to make the ratio 1 : 1?
90
120
220
240
What must be subtracted from each of 7, 9, 11 and 15, so that the resulting numbers are in proportion?
1
2
3
5
If p, q, and r are in continued proportion, then :
p : q = p : r
q : r = p2 : q2
p : q2 = r : p2
p : r = p2 : q2