by weight,90% of tomato and 78% of potato is water. Find the total qunatity,by weight, of water in 90 kg of potato and 30 kg of tomato

(0.78 * 90) + (0.9 * 30) = ? kg

T = .9(30) = ?

P = .78(90) = ?

To find the total quantity of water by weight in 90 kg of potato and 30 kg of tomato, we need to calculate the weight of water in each ingredient separately and then sum them up.

First, let's calculate the weight of water in 90 kg of potato. We know that 78% of potato is water, which means that 78% of 90 kg is water.

Weight of water in potato = 78% * 90 kg
Weight of water in potato = 0.78 * 90 kg
Weight of water in potato = 70.2 kg

Next, let's calculate the weight of water in 30 kg of tomato. We know that 90% of tomato is water, which means that 90% of 30 kg is water.

Weight of water in tomato = 90% * 30 kg
Weight of water in tomato = 0.9 * 30 kg
Weight of water in tomato = 27 kg

Now, we can find the total quantity of water by adding the weight of water in potato and tomato:

Total weight of water = Weight of water in potato + Weight of water in tomato
Total weight of water = 70.2 kg + 27 kg
Total weight of water = 97.2 kg

Therefore, the total quantity of water by weight in 90 kg of potato and 30 kg of tomato is 97.2 kg.