Question

An Oreo contain 15% of iron. how many one is required to get 18lg ​

Answer 1

Step-by-step explanation:

Let the total weight of the ore be 100 kg.

Copper = 15 lg.

If a5 kg copper is there, total weight = 100 kg

If 75 kg copper is there, 10015×75 = 500 kg.

Answer 2

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Comtian of iron in ore = 15 %

= 15 kg

Let's the answer be x ,

$x \: kg \: oreo = 18kg \: iron$

$x \: = \frac{100}{15} \times18 \\ = 120kg \: of \: oreo$

=> 120 kg Oreo are required for 18kg .

Hope it will help you