five vessels have equal capacities. Each vessel contains some milk. the ratio of the quantities of milk in these vesseles is 3:4:5:6:7 . the total quantity of milk is 60% of the combined capacity of the vessels. How many vessels contain at least 50% milk?

Question

How to frame an eequation to solve

Answer 1

3+4+5+6+7 = 25
So, the milk in the vessels is
3x,4x,5x,6x,7x

If the capacity of each is z, then

25x = 0.6*5z = 3z
x = 0.12z

So, in terms of a full vessel, the amounts of milk in each of the vessels is

.36, .48, .60, .72, .84

Looks like 3 of them are over 50% full.