Walter is back in his lab doing experiments. For his new experiment, he needs 2 parts of water for every 8 parts of salt
If he has 7.5 parts of water, how many parts of salt does he need?

345

step-by-step explanation:

47 - 90 = 43

43 - 180 = x

x = 137

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