3 boys share some oranges. the first boy received 1/5 of the oranges. the 2nd received 2/5 of the reaminder. the third boy received 72 oranges. how many iranges did they start with

Arefrigeration system at your company uses temperature sensors fixed to read celsius (°c) values, but the system operators in your control room understand only the fahrenheit scale. you have been asked to make a fahrenheit (°f) label for the high temperature alarm, which is set to ring whenever the system temperature rises above –10°c. what fahrenheit value should you write on the label?