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primary 6 | Maths
| Data Analysis
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Date Posted: 4 years ago
Views: 286
after
A: 4u
B: 2u
C: u
before
A: 2u
B: 2u-15
C: u+5
(a)
2u + 2u-15 + u+5 = 115
u = 25
Beth's mass is 2x25-15 = 35 kg
(b)
total mass in the end = 7x25 = 175
average mass is 175/3
= 58 kg (to nearest whole no.)
A: 4u
B: 2u
C: u
before
A: 2u
B: 2u-15
C: u+5
(a)
2u + 2u-15 + u+5 = 115
u = 25
Beth's mass is 2x25-15 = 35 kg
(b)
total mass in the end = 7x25 = 175
average mass is 175/3
= 58 kg (to nearest whole no.)
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