Please help me in the following:

A bottle, a vase and a tank had a total of 875 ml of water in them. 3/7 of the water in the bottle was poured out while 35 ml of water was added to the vase and more water was added into the tank until the water in it tripled. The ratio of water in the bottle, vase and tank is now 2:1:6.

a) find the amount of water in the vase at first?

b) what was the percentage increase in water in the vase?

Thanking you in advance.

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