Question

FIRST TO ANSWRR GETS 30 POINTS!

Answer 1

Answer:

a) £600

b) £1400

Step-by-step explanation:

a)  Set up a ratio of price to percentage of original price.

Let x = original price

⇒ £420 : 70 = £x : 100%

$\sf \implies 420 : 70 = x : 100$

$\sf \implies \dfrac{420}{70}=\dfrac{x}{100}$

$\sf \implies x=100\cdot\dfrac{420}{70}$

$\sf \implies x=600$

Therefore, the original price of the bracelet was £600

b) Set up a ratio of price to percentage of original price.

If the ring is reduced by 40% then it is now 60% of the original price, since 100% - 40% = 60%

Let x = original price

⇒ £840 : 60% = £x : 100%

$\sf \implies 840 : 60 = x : 100$

$\sf \implies \dfrac{840}{60}=\dfrac{x}{100}$

$\sf \implies x=100\cdot\dfrac{840}{60}$

$\sf \implies x=1400$

Therefore, the original price of the ring was £1400