Linda is 9/10 as tall as patrick and 3/4 as tall as Ali. If the total height of the 3 pupils is 418.5 cm, how much taller is Ali than Patrick? Please help me and tell me how you get the answer step by step. Thanks
We have three people, with three unknown heights. Call the respective heights of Linda, Patrick, and Ali .
Since Linda's height is that of Patrick, we have
Similarly, for Linda and Ali we have
But we further know that the sum of all three heights is 418.5 cm. This gives:
You now have three equations with three unknowns. Can you solve this system?