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Chelsea12345
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How do i work out question 1, part c?
https://pmt.physicsandmathstutor.com...%20A-level.pdf

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https://pmt.physicsandmathstutor.com...%20A-level.pdf
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macpatgh-Sheldon
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Hi Chelsea - let me take you through this step by step (keep a tissue handy as babies cry sometimes [you might have heard or seen this on telly OR in your mirror - sorrrrrrrrry! ]

You know that population increases by 9.3 per 1000
AND
decreases by 9.7 per 1000

So how much does it decrease by net??? ---------------------xxxxxxxxxxxxxxxxxxxx-------------------------xxxxxxxxxxxxxx
YES well done, of course by 0.4/1000 - even a millenial does not require a calculator for this baby stuff!!

If out of 1000 people, 0.4 are reduced, then out of the actual population (60,200,000) how many will be reduced?

YES YOU SAID IT - good the answer is:
....…………………...
………………….
…………..
…...
"Easy peasy lemon squeezy, yeah?

(60,200,000/1000) X 0.4

= 60,200 X 0.4 (cancel out 3 zeros in numerator AND denominator, OK?)
= 24080

Yes, but Q asks NOT how many reduced BUT size of p-ln

So, Well I think you can do a simple subtraction - again try it in your mind instead of reaching for your calculator as woosy teachers teach you to.

Happy now - if you get it right, you can throw away the tissue and ask mum for some Smarties! (yummy! - enjoy!)

M
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