Maths Percentage - - Solutions

Solution for Maths BINGO game (9 percentage questions)

PERCENTAGE

1a) ( 75/100) (40/100) = (3/4) X (4/10)
= 3/10
30% of the girls wear glasses in class.
1b) 30% à 12
100% à (100/30) X 12 = 40
40 students in class


2) 86% à 215
100% à (100/86) X 215
= 250
No of workers is 250


3) Let c be the selling price before GST and discount.
i) amount to pay = (104/100) X (90/100) X c
ii) amount to pay = (90/100) X (104/100) X c
the amount is the same for both options


4) If x is the original number, the new number is
(125/100)(75/100) x
= 0.9375 x
Hence the new number is smaller than the original number.


5) a) 35% à 70
100% à (100/35) X 70 = 200
the number is 200

b) (80/100)(130/100) X 500 = 520
c) [(100-x)/100 ] (125/1000 = 1
(100 – x) 125 = 100 X 100
x = 20


6) a) ( 7 / 8) X 100 = 87.5%
b) (14 / 25) X 100 = 56%
c) 0.385 X 100 = 38.5%
d) 0.112 X 100 = 11.2%


7) a) (12 1/5) / 100 = 0.122
b) ( 27 3/8) /100 = 0.27375


Ignore Q.7C and .Q8


9. a) 45 % à 72
100% à (72/45) X 100
= 160
b ) 55% of 160 = (55/100) X 160
= 88

the end ☺



Bella.