Mathematics Paper 1B

• 3

Two bells ring at intervals of 35 and 42 minutes respectively. The bells ring together at 8.48 a.m. Determine the time when the bells will ring together again

• 12.18 a.m.

• 12.18 p.m.

• 3.30 p.m.

• 2.10 p.m.

• 0, 1, 2, 3

• 0, 1, 2

• 1, 2

• 1, 2, 3

The size of two interior angles of an irregular polygon each measures 90⁰. All the other remaining interior angles each measure 150⁰. Determine the number of sides of the polygon.

(a)  

In a race Kipsang maintained an average speed of 5 m/s. When he was 310 m to the finishing line, Mutunga was 50 m behind him. However, Mutunga finished the race 10 m ahead of Kipsang. Determine Mutunga's average speed.

(a)  

A table is sold at Ksh 4500 and a chair at Ksh 2000. A salesman earns a commission of 8% on every table and 5% on every chair sold. On a certain week, he sold 3 more chairs than tables and his total earnings were Ksh 3980. Determine the number of chairs he sold that week

(a)  

A translation T maps A(-6,2) onto A'(3,5). A point P'(-4,2) is the image of P under T. Determine the co-ordinates of P.

• P(9,3)

• P(-13,-1)

• P(5,5)

• P(13,1)

The cost of one litre of petrol is Ksh 110. John's vehicle covers 12 km on one litre of petrol. He used Ksh 2805 on petrol to travel from town A to town B. Jane's vehicle consumes 12.5 litres of petrol for every 100 km travelled. Calculate the amount of money that Jane would use to travel from town A to B on the same road.

• Ksh 4207.50

• Ksh 4180

• Ksh 4290

• Ksh 2692.80

• 15⁰

• 25⁰

• 21⁰

• 18⁰