# how to convert a number into minutes? [closed]

I have in

cell a1 time information (format HH:MM)

cell b1 a figures representing minutes

I want to add the time information and the minutes into cell c1.

a1: 13:30

b1: 10

c1: 13:40

I don't want to enter the minutes in b1 as HH:MM, but only as a number.

Thanks in advance for the hint on how to convert the number into minutes format.