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Primary 4 | Maths
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Need help for questions 2 and 3. Thanks
at first
A: 1u + 280
B: 1u
after
A: 1u + 260
B: 1u + 20
1u + 260 = 3 . (1u + 20)
1u = 100
at first, 380 in A
* * *
at first
C: 1u
K: 1u + 265
after
C: 1u - 199
K: 1u + 265-50 = 1u + 215
1u + 215 = 4 . (1u - 199)
1u = 337
in the end, total 690
.
.
.
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