What is an equivalent fractions for 1 3/5 and 1 1/3 as 15 as the denominator?

Achemist has 200 ml of a 10% sucrose solution. she adds x ml of a 40% sucrose solution. the percent concentration, y, of the final mixture is given by the rational function: the chemist needs the concentration of the final mixture to be 30%. how many milliliters of the 40% solution should she add to the 10% solution to get this concentration?

Given: circle o, cd is diameter, chord ab || cd. arc ab = 74°, find arc ca.

3.4a=57.8 what is the the value of a