The sum of a whole number A and a whole number B is 12, and the ratio A:B is equivalent to 1:3. Find A and B

A. is 3 and B. is 9

Step-by-step explanation:

A. is 3 and B. is 9 because 3 plus 9 is 12 and 3:9 is equivalent to 1:3

P.S Can I have brainliest?

i use my brain for prombles like this maybe you could try it

step-by-step explanation:

the total estimated nappy use.=10,500,000

step-by-step explanation:

given that on an average the average baby uses 3528 napkins.

in a particular year 2014, the number of births were 299697 in new south wales.

rounding off the number of births to the nearest hundred thousand we have

no of birtsh = 300000

also rounding off the average usage to nearst thousand we get

average use of a baby = 3500

hence total number of nappy estimated to be used = 3500x300000

= 10,500,000

answer is 10,500,000 nappies