## Year 7 - Percentage

### Fill in the blanks

 1) (12% of 60) - (60% of 12) = .
 2) If length of a square is decreased by 10% and width is decreased by 40%, area decreases by %.
3)Find:
 0.6% of 170 Km. = Km. 0.4% of Rs. 398 = Rs. 1% of Rs. 814 = Rs. 0.4% of 834 meters = meters
4)Find the value of :
 5 % of 29 = 60 % of 38 = 43.3 % of 23 = 65 % of 956 =
5)Convert the following fraction to a fraction percentage form

 545 650
=     %

 95 170
=     %

 411 540
=     %

 236 970
=     %
6)Convert the following ratios into percent: (Write answers upto 3 decimal places)

 36 12
= %

 36 27
= %

 27 63
= %

 40 30
= %

### Choose correct answer(s) from given choice

7)If 20 % of a is 10, then what is the value of a?
 a. 55 b. 39 c. 62 d. 50
8)A solution of sugar and water contains 15% salt by weight. Of it 50 kg. water evaporates and the solution now contains 25% of salt. Find the original quantity of sugar.
 a. 18.75 kg b. 20 kg c. 16.25 kg d. 17.5 kg
9)A shopkeeper sold a racket at a loss of 9%. Had he sold it for $54 more, he would have gained 9%. Find the cost price of racket.  a.$ 450 b. $300 c.$ 400 d. \$ 250

### Check True/False

 10) 15% of 13% of 900 = 13% of 15% of 900 True    False