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primary 6 | Maths
| Percentage
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Date Posted: 3 years ago
Views: 515
Saturday
A = u+240
C = u
Sunday
A = decreased 40%, left 60%
= (U+240) ×60%
= 0.6u + 144
C = increased 20% = 120%
= U × 120%
= 1.2u
Sunday total = 1440
0.6u+144 + 1.2u = 1440
1.8u = 1440-144
1u = 1296 ÷ 1.8
1u = 720
Saturday total
= 2u +240
= (2×720) +240
= 1680
% change
= (1680-1440)÷1680 × 100%
= 14.28571429
= 14.29 (2 decimal place)
A = u+240
C = u
Sunday
A = decreased 40%, left 60%
= (U+240) ×60%
= 0.6u + 144
C = increased 20% = 120%
= U × 120%
= 1.2u
Sunday total = 1440
0.6u+144 + 1.2u = 1440
1.8u = 1440-144
1u = 1296 ÷ 1.8
1u = 720
Saturday total
= 2u +240
= (2×720) +240
= 1680
% change
= (1680-1440)÷1680 × 100%
= 14.28571429
= 14.29 (2 decimal place)
See 1 Answer
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Hope this helps
Date Posted:
3 years ago
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