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secondary 4 | E Maths
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Find the value of P and Q
Please help me out
Date Posted: 4 years ago
Views: 219
Another way :
If 2p : 4.5 = 4 : p,
Then 2p/4.5 = 4/p
Cross multiply,
2p² = 4.5 x 4 = 18
p² = 9
p = √9 = 3 (we do not consider -3 since the terms in a ratio is always positive)
Since 4 : p = ½ : q,
4/p = ½/q
cross multiply,
4q = ½p
q = ⅛p = ⅛(3)
= ⅜
If 2p : 4.5 = 4 : p,
Then 2p/4.5 = 4/p
Cross multiply,
2p² = 4.5 x 4 = 18
p² = 9
p = √9 = 3 (we do not consider -3 since the terms in a ratio is always positive)
Since 4 : p = ½ : q,
4/p = ½/q
cross multiply,
4q = ½p
q = ⅛p = ⅛(3)
= ⅜
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