Can anyone help me with this question, thanks! PQRS and PSTU are parallelograms.

(The picture shows 2 parallelograms sharing line PS. Q is up and left of P, R is up and left of S, U is down and left of P, T is down and left of S. QR, PS and UT are the longer sides.
PU=a
PS=b
PQ=c

Find, in terms of a, b and c:
i. TQ
ii. PX where X is the midpoint of TQ. (Fully simplified)

Select the correct answer from each drop-down menu. the table shows the annual sales revenue for different types of automobiles from three automobile manufacturers. sales revenue (millions of dollars) suv sedan truck marginal total b & b motors 22 15 9 46 pluto cars 25 27 10 62 panther motors 26 34 12 72 marginal total 73 76 31 180 the company with the highest percentage of sales revenue from sedans is . of the annual sales revenue from suvs, the relative frequency of pluto cars is .