3 Marks 8 A salesman is paid a salary of Sh 10000 per month He is also paid a

3 marks 8 a salesman is paid a salary of sh 10000 per

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(3 Marks) 8. A salesman is paid a salary of Sh. 10,000 per month. He is also paid a commission on sales above Sh. 100,000. In one month he sold goods worth Sh. 500,000. If his total earning that month was Sh. 56,000. Calculate the rate of commission. ( 3 Marks) 9. A cylinder of radius 14cm contains water. A metal solid cone of base radius 7cm and height 18cm is submerged into the water. Find the change in height of the water level in cylinder. (3 Marks) 10. Simplify the following. (3Marks) 2 x 4 12 3 x 2 - 1 3 x + 6
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V C D 4cm 11. A mother is now 2 1 2 times as old as her daughter Mary. Four years ago the ratio of their ages was 3:1. Find the present age of the mother. (3 Marks) 12. The line which joins the point A (3, k) and B (-2, 5) is parallel to the line whose equation is 5y + 2x – 7 = 0. Find the value of k. (3 Marks) 13. A Kenyan bank buys and sells foreign currencies at the exchange rates shown below. Buying Selling (KShs.) (KShs.) 1 Uuro 147.86 148.00 1 US Dollar 74.22 74.50 An American arrived in Kenya with 20 000 Euros. He converted all the Euros to Kenya shillings at the bank. He spent KShs. 2,512,000 while in Kenya and converted the remaining Kenya shillings into US Dollars at the bank. Find the amount in Dollars that he received. (3 Marks) 14. The diagram below represents a right pyramid on a square base of side 3cm. The slant edge of the pyramid is 4cm.
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A B 3cm (a) Draw a labelled net of the pyramid. (2 Marks) (b) On the net drawn, measure the height of a triangular face from the top of the pyramid. (1 Mark) 15. Using logarithms tables only, evaluate. (4 Marks) 3 849.6 x 2.41 3941 16. Use reciprocal and square tables to evaluate, to 4 significant figures, the expression. (3 Marks) 1 0.3654 4.151 2
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