Question

Find

a) 16% of 25 litres

b) 4 % of Rs 1800

c) a number whose 4% is 72

d) x if 6 is 50% of x

e) ratio of 15 days : 3 weeks

f) x if x , 4 , 9 and 12 are in proportion.

please say me the answer in process.​

Answer 1

Answer:

a) 16% of 25L

   16/100 × 25L

   4L

b) 4% of ₹1800

   4/100 × ₹1800

   ₹72

c) let the no. be x

   x of 4% = 72

   x × 4/100 = 72

   x = 72 × 100/4

   x = 1800

d) x of 50% = 6

   x × 50/100 = 6

   x = 6 × 100/50

   x = 12

e) 3 weeks = 3 × 7 = 21 days

   15 days : 21 days

   = 5:7

f) x : 4 :: 9 : 12

  = product of interior = product of exterior

  = 4 × 9 = 12 × x

  = 36 = 12x

  = 36/12 = x

  = 3 = x

hope you got all your answer

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Answer 2

Find 16% of 25 litres and 4 1 by 2% of rupees 1800