How much #40%# solution and #70%# solution does a scientist need to get #30# liters of #60%# solution?
1 Answer
Jan 1, 2018
Scientist needs
Explanation:
Whenever you have such problems where two mixes with different strengths are to be mixed to get a third mix whose strength is something between the strength of two mixes,
- First write the two strengths with space between them (as shown inn figure below.
- Then in between write the desired strength.
- Write the differences as shown by crossed lines, and
- simplify the ratio.
This is the desired ratio. Here it#1:2# and as we need#30# liters of solution, we need#10# liters of#40%# solution and#20# liters of#70%# solution.