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primary 6 | Maths
| Percentage
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Date Posted: 4 years ago
Views: 189
Aug sold
total: 1280
cokes: 3u
cookies: 3u
puffs: 4u
puffs & cookies: 7u
Sept
cokes: 3u . 5/4 = 15u/4 = 40%
40 % = 15u/4
60% = 15u/4 . 3/2 = 45u/8
puffs & cookies: 45u/8
decrease in puffs & cookies
= 7u - 45u/8
= 56u/8 - 45u/8
= 11u/8
% decrease
= 11/8 ÷ 7
= 19.6%
OR
Aug sold
total: 1280
cokes: 30% = 384
puffs & cookies = 70% = 896
Sept
cokes: 384 . 5/4 = 480
40 % = 480
60% = 480 . 3/2 = 720
puffs & cookies: 720
decrease in puffs & cookies
= 896 - 720
= 176
% decrease
= 176 ÷ 896
= 19.6%
.
.
.
total: 1280
cokes: 3u
cookies: 3u
puffs: 4u
puffs & cookies: 7u
Sept
cokes: 3u . 5/4 = 15u/4 = 40%
40 % = 15u/4
60% = 15u/4 . 3/2 = 45u/8
puffs & cookies: 45u/8
decrease in puffs & cookies
= 7u - 45u/8
= 56u/8 - 45u/8
= 11u/8
% decrease
= 11/8 ÷ 7
= 19.6%
OR
Aug sold
total: 1280
cokes: 30% = 384
puffs & cookies = 70% = 896
Sept
cokes: 384 . 5/4 = 480
40 % = 480
60% = 480 . 3/2 = 720
puffs & cookies: 720
decrease in puffs & cookies
= 896 - 720
= 176
% decrease
= 176 ÷ 896
= 19.6%
.
.
.
See 1 Answer
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Date Posted:
4 years ago
May I know why is 40% for cakes on sept whereby it stated total sales of the three items?
The question means after the number of cakes increased by 25%, it will be 40% of the total of the three items in september.
Thank you, got it!
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