Sedang cari ulasan tentang [Q] the prices of two socks p and q are in the ratio of 5:7. when the price of P is increased by $12...? Bila iya, anda sudah berada di situs yang benar.
Oh ya, kami sudah memiliki 1 jawaban atas [Q] the prices of two socks p and q are in the ratio of 5:7. when the price of P is increased by $12.... Tak perlu basa basi, langsung saja pelajari kunci jawabannya selengkapnya disini:
[Q]
the Prices Of Two Socks P And Q Are In The Ratio Of 5:7. When The Price Of P Is Increased By $12 And The Price Of Q Is Decreased By $6, The Prices Of Two Stocks Become The Same. Find The Original Price Of Stock P
Jawaban: #1: Jawab:
The original price of p is $45.
Penjelasan dengan langkah-langkah:
Notes:
I don't know whether it is "socks" or "stocks". Please re-read your question. So, I will just use p and q.
Given that the ratio of p and q is 5 : 7, we can get:
p : q = 5 : 7
q = (7/5)p .....(i)
The price of p is increased by $12:
P = p + $12 .....(ii)
The price of q is decreased by $6:
Q = q – $6 .....(iii)
Updated prices of both p and q are the same in the end.
So, (ii) = (iii) ⇒ P = Q
⇔ p + $12 = q – $6
Plug the value of q we got from (i).
⇔ p + $12 = (7/5)p – $6
Multiply both sides by 5.
⇔ 5p + 5($12) = 7p – 5($6)
⇔ 5p + $60 = 7p – $30
Substract 5p from both sides.
⇔ 5p + $60 – 5p = 7p – $30 – 5p
⇔ $60 = 2p – $30
Add $30 to both sides.
⇔ $60 + $30 = 2p – $30 + $30
⇔ $90 = 2p
Switch sides.
⇔ 2p = $90
Divide both sides by 2.
⇔ 2p/2 = $90/2
⇔ p = $45
Therefore, the original price of p is $45.
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