A rhombus is symmetrical about _____.
A The line joining the midpoints of its opposite sides
B Each of its diagonals
C Perpendicular bisector of each of its sides
D None of these
Veronica can type 28 words per minute. At this rate, how many words can Veronica type in
The ratio of the number of men to the number of women at a concert is 5 : 3. The ratio of the number of women to the number of children is 2 : 5. Find the ratio of the number of children to the total number of women and men in the concert.
A15 : 16
B16 : 15
C13 : 12
D12 : 13