(a) A man shared his property among his children as follows: Child's name Ann Afia...
MATHEMATICS
WAEC 2021
(a) A man shared his property among his children as follows:
Child's name | Ann | Afia | Kojo | Nuno | Akom |
Percentage share | 5 | 15 | 10 | 45 | 25 |
Represent the information on a pie chart
(b) A box contains 5 red, 3 green and 4 blue identical beads. Calculate the probability th a girl takes away two red beads, one after the other, from the box.
Explanation
(a)
Child's Name | Percentage Share (%) | Angle(°) |
Ann | 5 | 5/100 * 360" = 18 |
Afia | 15 | 15/100 x 360° = 54 |
Kojo | 10 | 10/100 x 360° = 36 |
Nuno | 45 | 45/100 x 360° = 162 |
Akosua | 25 | 25/100 x 360° = 90 |
Total | 100 | 360 |
(b) P(1st red) = 5/12
P(2nd red) = 4/11
Probability (two red beads) = 5/12 * 4/11
= 5/33 (Accept 0.1515)
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