The drawing shows two thermometers, A and B $,$ whose temperatures are measured in $$A and $B.$ The ice and boiling points of water are also indicated. $($a$)$ Using the data in the drawing, determine the number of $B$ degrees on the $B$ scale that correspond to $1A$ on the A scale. $($b$)$ If the temperature of a substance reads $+51\mathrm{.}0A$ on the A scale, what would that temperature read on the B scale?

$($a$)1A=$ Number $$ Units $$

$($b$)T_B=$ Number $$ Units $$