Question

The price of a DVD is $6.5. It increase by 10% then another 30%

Use a multiplier and do this in only multiplying 2 times

Thanks for helping

Answer 1

• $6.5*1.1*1.3 = $9.30

Given

• Initial price = $6.5
• First increase = 10%
• Second increase = 30%

Solution

Price after first increase:

• 6.5 + 10% =
• 6.5 + 6.5*10/100 =
• 6.5*(1 + 0.1) =
• 6.5*1.1 =
• 7.15

Price after second increase:

• 7.15 + 30% =
• 7.15 + 7.15*30/100 =
• 7.15(1 + 0.3) =
• 7.15*1.03 =
• 9.30 (rounded to the nearest cent)

The two steps above can be combined as:

• $6.5*1.1*1.3 =
• $9.30