Level 2
On the line not drawn to scale, the length of AB is 12 the length of BC and BC has the same length as CD. What is the ratio of the length of AD to the length of AB?
Level 2
On the line not drawn to scale, the length of AB is 12 the length of BC and BC has the same length as CD. What is the ratio of the length of AD to the length of AB?
Level 2
A bag contains blue and green marbles in the ratio of 2 : 5. There is a total of 91 marbles in the bag. How many more blue marbles must be added into the bag so that the number of blue marbles will be the same as the number of green marbles?