A factory uses two automatic machies to

produce printing ink. On the average, Machine A

produces $950$ litres per hour, with a standard

deviation of $88$ litres. For Machine $B,$ the mean

yield per hour is $1090$ litres, and the standard

deviation is $115$ litres. Assume both productions

follow normal distributions. What is the

probability

Machine A produces more than $2000$ litres

of ink in $2$ hours?