Answer :
For 14 tubes of black paint 42 tubes of white paint are needed.
The to get the extra tube you have to think that half of 2 is 1 and half of 6 is 3 .
so you add 3 and 42 and you get 45
The to get the extra tube you have to think that half of 2 is 1 and half of 6 is 3 .
so you add 3 and 42 and you get 45