Question

The cost of a book costs 30$ now its 80% of the original cost find the new price

Answer 1

Given that–

The cost of a book costs 30$. Now its 80% of the original cost.

• Original cost of book 30 $

– ★ 80% of 30

`\red{\twoheadrightarrow\sf (80)/(100) * 30}`

`\twoheadrightarrow\sf \frac{8\cancel{0}}{1\cancel{0}\cancel{0}} * 3\cancel{0}`

`\twoheadrightarrow\sf 8 * 3`

`\red{\twoheadrightarrow\sf 24}`

• Therefore, new price will be 24 $.

Answer 2

Write 80% as a decimal: 0.80

Multiply the original price by the decimal:

30 x 0.80 = 24

Answer: $24