Rae Kuan's answer to Kc's Primary 6 Maths Data Analysis Singapore question.
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Date Posted:
4 years ago
if 109 is correct,
at first
M = 109
A = 160-109 = 51
after
A = 51+5 = 56
M = 109-20 = 89
but
89-56 = 33, not 38
.
at first
M = 109
A = 160-109 = 51
after
A = 51+5 = 56
M = 109-20 = 89
but
89-56 = 33, not 38
.
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