# can someone help me with these PSL Q's Watch

1. Thankss!
Attached Files
2. PSL.docx (350.2 KB, 155 views)
3. For the first one the answer is C, 8.6 - basically if you think of the problem algebraically (sp?), what it's asking you to solve the equation
((1 * 9.7) + (4.5 * z)) / 5.5 = 8.8 for z; when you view it like that I think it makes it simpler.

On the second one the wording is very slightly ambiguous, but the answer is B, 5.5 - firstly what you need to do is work out what 14% of the Repair income (in this case £75,600) because that's the profit from repairs. So you then know that the remaining profit from the other business areas is gonna be 112,000 - 75,600 = 36,400. Once you know that, all you have to do is work out 36,400 as a percentage of the rest of the income (so 36,400 as a % of 660,000. So (36,400 / 660,000) * 100 = ~5.5%.

Hope this helps!
4. Question 1:

The key concept to extract from this question is that --> Mortalities in Urban + Mortalities in Rural = Total Mortalities. Simple I know but key to succeeding in solving this.

So mortalities in Urban is calculated by:

1) Extract Population --> 1079,000,000
2) Work out how much of this population is Urban using the 'Urban:Rural Split'
3) 1079,000,000 / (5.5) = 196,181,818.2
4) Now work out how much of this Urban Population is Mortalities using the rate of 9.7 per 1000.
5) ( 196,181,818.2 / 1000 ) x 9.7
6) = 1,902,963.637
7) So going back to ''KEY CONCEPT". We now have the Mortalities in Urban.
8) But 'Oh No' We do not have the Mortalities in Rural. Why? Because we need to work out the rate.
9) So simple algebra tells us that the 'rate x Population for Rural' will give us the Mortalities in Rural.
10) Let's find the population in Rural by using the ratios given.
11) ( 1,079,000,000 / 5.5 ) x 4.5 = 882,818,181.8
12) We know that this multiplied by the rate will give us the Mortalities for rural.
13) ( 882,818,181.8 / 1000 ) x R = Mortalities for Rural.
14) We have the algebraic equation now: 1,902,963.637 + 882,818.1818R = Total Mortalities
15) Total Mortalities is given by ( 1079,000,000 / 1000 ) x 8.8 {Given in Table}
16) 1,902,963.637 + 882,818.1818R = 9,495,200
17) R = 8.599999999 = 8.6

Question 2:

1) Profit on repairs = 0.14 x £540,000 = £75,600.
2) If Total Profits are £112,000 then profits from the remaining areas = £112,000 - £75,600 = £36,400.
3) Because the answer wants this profit as a percentage of remaining INCOME IN THE FOUR AREAS we get...
4) ( 36,400 / 660,000 ) x 100 = 5.515151515 = 5.5%
5. why am i getting 1467? :s
Attached Files
6. PSL.docx (624.9 KB, 75 views)
7. I got 1457 ( might be wrong tho, well 1456.56)

1. 100,000/158 ( convert Yen into Pound)= 632.9113924
2. This is where I might be wrong, since you're gonna be converting into AUD anyway, you just multiply this by 0.95, then convert it into AUD, and multiply that by 0.95 aswell

so 632.9113924*0.95= 601.32658228

4. 601.32658228*2.55*0.95= 1456.566456
8. (Original post by Anonymous samosa)
why am i getting 1467? :s
someone spends 20mins writing out step by step instructions to help you out and you cant even be bothered to post a 'thanks' or anything . . . . . . . . . . . .

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