Ascientist has two solution which she labelled, solution a and solution b, each continue salt, she knows that solution a is 65% salt and solution b is 90% salt. she wants to obtained 40 ounce of mixture that is 75% salt, how many ounce of each solution should she use

The table below shows the approximate masses of a dust particle and a grain of pollen. dust particle 0.000000778 g grain of pollen 0.00000000155 g the mass of a dust particle can be estimated and written in the form a × 10^b, where a = 8 and b = the mass of a grain of pollen can be estimated and written in the form a × 10^b, where a = 2 and b = based on the estimates, the mass of a dust particle is approximately blank times larger than the mass of a grain of pollen.