Question 12: Mrs. Jones is expecting a baby. The probability that it will be a boy is ½ and the Probability that the baby will have blue eyes is ¼. What is the probability that she will have a Blue-eyed boy?
Question 13: Convert the speed 90 km per hour of a car to metres per second
(a) 1.5 ms-1
(b) 2.5 ms-1
(c) 25 ms-1
(d) 1.5 x 103ms-1
Question 14: Uche and Chidi shared a sum of money on the ratio m:n. If Chidi’s share was N4,200.00, what was Uche’s share?
Question 15: A husband contributes 7% of his income into a fund and his wife contributes 4% of her income. If the husband earns N5,500 per annum (p.a) and his wife earns N4,000 p.a, find the sum of their contribution
to the fund.
Question 16: If the children share N10.50K among themselves in the ratio 6:7:8, How much is the largest share?
Question 17: A car is traveling at an average speed of 80kmh-1. Its speed in metres per second (m/s) Is
Question 18: A trader makes a loss of 15% when selling an article. Find the ratio, selling price: cost price.
Question 19: A car travels at xkm per hour for 1 hour at ykm per hour for 2 hours. Find its average speed.
(b) x+ ykmh-1/3
(c) x+2 ykmh-1
(d) 2x+ ykmh-1/3
Question 20: The ages of three men are in the ratio 3:4:5. If the difference between the ages of the oldest and youngest is 18 years, find the sum of the ages of the three men.
(a) 45 years
(b) 72 years
(c) 108 years
(d) 216 years