MANG’U HIGH SCHOOL TRIAL 4 MOCK, 2025 121/1 MATHEMATICS PAPER 1

MANG’U HIGH SCHOOL TRIAL 4 MOCK, 2025
Kenya Certificate of Secondary Education
121/1
MATHEMATICS
PAPER 1
TIME: 2½ HOURS
SECTION I (50 Marks)
Answer all the questions in this section
3
1. A man withdrew some money from a bank. He spent of the money on his daughter’s school fees
10
3
and of the remainder on his son’s school fees. If he remained with Ksh 10 500, calculate the
5
amount of money he spent on son’s school fees.
(3 marks)
2. Solve for 𝑥
(3 marks)
(𝑥+1)
(2𝑥+1)
9
+3
= 108
3. The volumes of two similar solid spheres are 4752 cm3 and 1408 cm3. If the surface area of the
smaller sphere is 352 cm2, find the surface area of the larger sphere.
(3 marks)
4. The figure below represents a sketch of the cross – section of a solid ABCDEFGH and its edge CF.
Complete the sketch of the solid showing the hidden edges using dotted lines.