PSLE Math 2021 Paper 2 Question 9

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PSLE Math 2021 Paper 2 Question 9

a) 25%
๐‘‘๐‘’๐‘๐‘Ÿ๐‘’๐‘Ž๐‘ ๐‘’ ร— 100% = 3 (๐ฝ๐‘Ž๐‘›) ร— 100% ๐‘œ๐‘Ÿ๐‘–๐‘”๐‘–๐‘›๐‘Ž๐‘™ 12
= 25%
1u โ†’ 144 รท 4 = 36
16u โ†’ 16 ร— 56 = 576

b) (i) 576
4u โ†’ 144
(ii) 421.5
Jan to May โ†’ 5 435 ร— 5 = 2175
12u + 9u + 16u = 37u
1u โ†’ 36
37u โ†’ 36 ร— 37 = 1332
May and April โ†’ 2175 - 1332 = 843
Average โ†’ 843 รท 2 = 421.5