Maths Questions please help
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Maths Questions please help

[From: ] [author: ] [Date: 13-02-24] [Hit: ]
though how do you shorten it?4) 48% of an orchardists trees are apple trees. 32% are pear trees, and the remainder are plum.If he has 180 plum trees, what is the total number of trees in his orchard?......
Workings out much appreciated. THANKS.

1) Change to a decimal: 110%
I got 0.11? Is it right???

2) Change to a fraction: 0.375

3)Change to a decimal: 7/9
I know its 0.77777778, though how do you shorten it?

4) 48% of an orchardist's trees are apple trees. 32% are pear trees, and the remainder are plum.
If he has 180 plum trees, what is the total number of trees in his orchard?

5) When Mary bought a computer priced at $1800, she received a student discount of 15%. How much did she pay for the computer?

This last one I have done, although I'm not sure if its right:

6) Bill scored 60% for a chemistry test. If his actual score was 48, what was the maximum mark possible for this test?

Thanks heaps guys, it really does help me to understand.

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110% = 1.10 = 110 percent Examples: 50 % = 0.50 47 percent = 0.47 26% = 0.26

99 percent = 0.99 and 100% = 1.00 and 10% = .10 so 110% = 1.10 = 110 percent.

0.375 = 375/1000 = (dividing top and bottom by 5 ) = 75 / 200 = dividing top and bottom again

by 5 = 15 / 40 = (divide by 5 again) = 3/8 = 0.375

7/9 = 7 divided by 9 = 0.778 make it as short or long as needed because they are all 7 after the decimal.

And 7 is greater than 5 so you may end it in 8.

48% apple trees. 32% pear. and x plum. 48 + 32 = 80%. 100 minus 80 = 20%

20 per cent = plum ....to make 100%. of trees. ..... 20 + 48 + 32 = 100%

There are two easy ways to figure the computer cost. 15% discount means she paid 100 - 15 = 85%

1800 times 0.85 = 1530 dollars.......OR: 1800 times 15% = 270 dollars.....$1800 - $ 270 = $1530

Lets use a ratio for the chemistry test. 60 is to 100 as 48 is to what?......60/100 = 48/X

We cross multiply to get 60x = 4800......x = 4800/60.....x = 80 maximum score possible.

In using ratios the product of the means (100 and 48 ( in this case ) = the product of the
extremes (60 and X).


Good luck!

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Don't know rest but number 1 is 1.1 not 0.11
1
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