Answer:
60
Explanation:
Given that the ration of Peach : Mango is 6:4 (or simplified to 3:2)
i.e
peach's volume makes 3 out of 5 units of punch
mango's volume makes up 2 out of 5 units of punch
we can see that in order to make mango the same volume as peach, we need to increase mango's volume by 1 unit (such that BOTH will have the same 3 units)
We are given that after adding 12 cups of mango, we will now have the same units of mango and peach. Hence we can say that 12 cups of mango can be represented by 1 unit increase we described in the previous paragraph.
Hence,
1 unit ----> 12 cups
total punch: 5 units----> 12 x 5 = 60 units