Question

cost of a dozen pens is rupees 180 and cost of 8 ball pens is rupees 56 rupees.find the ratio of the cost of a pen to the cost of a ball pen​

Answer 1

Answer:

• Given the cost of 8 dozen pen is Rs 180
• And cost of 8 ball pen is Rs 56

If the Question is to find the ratio of the cost of 1 pen to the cost of 1 ball pen then it's as follows

1 at case ,

$= > 8 \: dozen = 180 \\ we \: know \: 1dozen \: = 12 \: \\ so \: 8 \: dozen \: = 12 \times 8 = 96\: \\ \\ = > 96 \: pen = 180 \\ \\ = > 1pen \: cost \: = \frac{180}{96} = RS \: 1.8$

2nd case

$= > 8 \: ball \: pen = 56 \\ \\ = > 1 \: ball \:pen = \frac{56}{8} = \: RS \: 7$

So ratios to the cost of 1 Pena ND 1 ball pen is

$\red{ \: \bold{ratio = \frac{1.8}{7} } }$

=> ratio = 7 : 1.8. or 1.8 : 7

And , if the question is about to find the ratio of cost of 8 dozen pen to the cost of 8 ball pen then it's as follows

$\red{ \: \bold{ratio = \frac{180}{56} } } = \frac{45}{14}$

Ratio = 45:14 or 14:45