Question

Find y if 75% of y is 180

Answer 1

Answer:

x = 105 degree and y = 75 degree.

Step-by-step explanation:

1/3 rd of right angle = 1/3 ☓ 90 = 30°

Now,

x = y + 30 degree (acc to que)

We see

x and y forms a linear pair so,

x + y = 180 degree

y + 30 + y = 180 degree

2y + 30 = 180 degree

2y = 150 degree

y = 75 degree

x = y + 30 = 75 + 30 = 105 degree

Step-by-step explanation:

Answer 2

To find : value of $y$ .

Given : $75\ \%\ of \ y \ is \ 180$

Solution :  

• A percentage is a fraction of an amount expressed as a particular number of hundredths of that amount.
• It is denoted by means % .
• We are using the unitary method to calculate the percentage of numbers.
• Fractions can be converted into percentages and vice-versa.
• Percentages are reversible. For example, $30 \%\ of\ 40$ is the same as $40 \%\ of\ 30 .$
• $75\ \%\ of \ y \ is \ 180$  
• We write condition as ,
• $\frac{75}{100}\times y =180$

                   $y =\frac{18000}{75} \\y = 240$

• Hence, the value $y$ is $240$ .