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Greeley [361]
3 years ago
14

Jack’s first weight increased by 20% and then his new weight decreased by 25%. His final weight is what percent of his beginning

weight?
Mathematics
1 answer:
ElenaW [278]3 years ago
8 0

Lets suppose his initial weight was 60 kilograms

A gain of 20%  would make his new eight  60 + 20*60/100

=  60 + 12

= 72 kg

he lost 25% of this:-

= 72 -   25 * 72/100 =  54 kg

This = (54/60) * 100  = 90% of his beginning weight  Answer


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This answer uses NMF, which you can find out about on my profile:

Preliminary work:
Following the BIDMAS order of operations, we can calculate part of it already, and that's the 2•4, which equals 8.
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x = 4:
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prisoha [69]

We are given an angle of 60° and a side of 15 cm.

We are given the opposite and is looking for the hypotenuse so we will use the sine ratio to find x.

sin = opp/hyp

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//

We can also use the tangent ratio to find the adjecent and then use pythagorean to find x.

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The answer would be the top one.

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