Question

All of the items in a bicycle shop are on sale for 30% off the regular price. Rene spends $74. 90 to buy a bicycle and a helmet (without taxes). If the regular price of the bicycle is $85, which equation can be used to find the regular price of the helmet, h? 0. 3 (74. 90 h) = 85 0. 3 (85 h) = 74. 90 0. 7 (74. 90 h) = 85 0. 7 (85 h) = 74. 90.

Answer 1

Percentage is a way to describe a part of a whole. The equation can be used to find the regular price of the helmet,h is 0.7(h+85)=74.90.

What is Percentage?

A percentage is a way to describe a part of a whole. such as the fraction 1/4 can be described as 0.25 which is equal to 25%.

To convert a fraction to a percentage, convert the fraction to decimal form and then multiply by 100 with the '%' symbol.

As we know that all of the items in the bicycle shop are on sale for 30% off, therefore, the cost of each item will be 70% of the real cost. Now, the total amount was spent is $74.90. Thus, if we represent the helmet by h, and bicycle by b, then

$70\%Helmet + 70\%Bicycle = \ 74.90\\\\0.70 h + 0.70B = 74.90$

Taking 0.7 as the common,

$0.7(h+B)=74.90$

As we know that the regular price of the bicycle(B) is $85, therefore, the equation can be written as,

$0.7(h+85)=74.90$

Hence, the equation can be used to find the regular price of the helmet,h is 0.7(h+85)=74.90.

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