Question

I got a new phone(Samsung A9) and the first app i downloaded was brainly. can anyone please answer my question.

i) if 12.5% of q is 19, find the value of q.
ii) Find the number x which is 6 1/4% of 4608.
iii) Find 60% of 30 minutes.
iv) What percentage is 13 weeks of a year?

Answer 1

Step-by-step explanation:

(i)

Given, 12.5% of q = 19

⇒ (12.5/100) * q = 19

⇒ 12.5 * q = 1900

⇒ q = 1900/12.5

⇒ q = 152.

Therefore, the value of q = 152.

(ii)

Given: x = 6 (1/4)% of 4608

= (25/4)% of 4608

= (25/400) * 4608

= 115200/400

= 288.

Therefore,the value of x = 288.

(iii)

60% of 30 minutes.

= (60/100) * 30

= (1800/100)

= 18 minutes.

(iv)

We know that 1 week = 7 days.

Then, 13 weeks = 91 days.

We know that 1 year = 365 days.

Now,

% = (91/365) * 100

   = (9100/365)

   = 24.93%.

Therefore, percentage is 24.93%.

Hope it helps!

Answer 2

Method of Solution:

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(1) 12.5% of q = 19

125÷10/100 of q = 19

125/1000 of q = 19

✒ 125/1000 × q = 19

125q/1000 = 19

125q = 19 × 1000

125q = 19000

q = 19000/125

q = 152


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(ii) Given : 6¼ % of 4608 = x

✒ 6¼ % of 4608 = x

25/4 % of 4608 = x

25/4 ÷ 100 of 4608 = x

25/400 of 4608 =x

✒ 25/400 × 4608 = x

x = 288


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(III) Given : 60% of 30 minutes.

✒ 60/100 × 30

✒ 6/10 × 30

✒ 6 × 3

✒ 18


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(iv) Given : 13 weeks of a year


Note : 1 week = 7 days or 1 year = 365 days

So, 1 year has 52 weeks


Now,

✒ 13/ 52 × 100

✒ 1/4 × 100

✒ 25 %


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