Really need it will bring my grade

The answer is D.

From the statement we know that Pete can lay 15 more tiles per hour than Jim, so, it means that Pete's rate is equal to Jim rate plus 15 more tiles. We also know that both lays the same number of lays, so:

Then, since both lays the same number of lays at different times, Jim in 7 hours and Pete in 6 hours

So, since Petes lays 15 more tiles per hour than Jim:

Therefore, Jim's rate can be found using the equation D.

Have a nice day!

step-by-step explanation:

one of the most important purposes of surface treatment is to alter surface properties according to the requirement of specific applications. for example, hydrophobic coating has been utilized on windshield and eyeglasses. gold atom monolayer on substrate has become a popular surface bioconjugation strategy.  

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