Question

There is 180ml of water in a glass and 20ml of lemon. We want to create lemon water such that 20% of the solution is lemon. How many ml of lemon would you add.

Answer 1

Answer:

l

Step-by-step explanation:

Science, any system of knowledge that is concerned with the physical world and its phenomena and that entails unbiased observations and systematic experimentation. In general, a science involves a pursuit of knowledge covering general truths or the operations of fundamental laws

Answer 2

Answer:

25ml

Step-by-step explanation:

Given : With 180 ml of water and 20 ml of lemon in a glass, we want to make lemon water so that 20% of the mixture is lemon.

To find :   How much lemon should we put, in ml.

Solution:

Say x millilitres of lemon are added.

then lemon = 20  + x  ml

Water = 180 ml

Total solution = 180 + 20 + x  =  200 +  x  ml

Lemon  % is 20 % in solution

=> 100 *   (20 + x) / ( 200 + x)   =    20  

=> => 5 *   (20 + x) = 200 + x

=> 100 + 5x = 200 + x

=> 4x = 100

=> x  = 25

20% of the solution will be obtained by adding 25 ml of lemon.

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