Lesson3️⃣ Finding The Original Quantity

Question 1

What percentage is the original always

Answer 1

100%

Question 2

Find the original price of a pair of jeans if they cost £32 and a 20% off sale

Answer 2

80% = £32
1% = 32/80
= 0.4 x 100
100% = £40

Question 3

After increasing his mass by 15%, John weighs 73.6 kg what was his mass before?

Answer 3

115% = 73.6g
1% = 73.6/115
= 0.64 x 100
100% = 64kg