Answer
(a) 1.0 °A =( 11/9 ) °B
(b) 40.0 °A = 48.89 °B
Work Step by Step
(a). According to data from diagram, we have
60.0 °A – (–30.0 °A) = 130.0 °A –20.0 °B
90.0 ° A = 110.0 °B
1.0 °A =( 11/9 ) °B
(b). 40.0 °A = 40.0 ×(11/9) °B
40.0 °A = 48.89 °B