exam Maths Puzzle Numerical Ability

A chemist needs 130 milliliters of a 65% solution but has only 56% and 95% solutions available. Find how many millimeters of each that should be mixed to get the desired solution.

Read Solution (Total 0)

exam Other Question

i have problem with this ques..plz will u help me...
1)If P(A)=1/3 and P(B)=3/5 and p(A U B)=14/15, then what type of events they are. By what number should P(A) be multiplied to make them independent? If there are 400 cubic centimeters of a chemical in 1 liter of solution, how many cubic centimeters of water must be added to dilute it to a 25% solution? (hint 1000 cc = 1 liter)