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Question
primary 5 | Maths
| Whole Numbers
One Answer Below
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Yuki wanted to buy 15 muffins and 12 egg tarts. However, she had just enough money to buy either 21 muffins or 28 egg tarts. After buying 6 muffins and 4 egg tarts, she had $21.60 left.
(a) How much did she pay for each egg tart?
(b) How much money did Yuki need to buy the remaining muffins and egg tarts?
(a)
21-15=6
6m=12e
1m=2e
2m=4e
12e+4e=16e
28e-16e=12e
12e=$21.60
1e=$1.80 answer
(b)
$1.80x28=$50.40
$50.40➗21=$2.40
$2.40x15=$36
$1.80x12=$21.60
$36+$21.40=$57.60
$57.60-$50.40=$7.20 answer
Is it correct working and answers.
(a) How much did she pay for each egg tart?
(b)How much money did Yuki need to buy the remaining muffins and egg tarts?
6m=12e
1m=2e
2m=4e
12e+4e=16e
28e-16e=12e
12e=$21.60
1e=$1.80 answer
(b)
$1.80×28=$50.40
$50.40 ÷ 21=$2.40
$2.40×15=$36
$1.80×12=$21.60
$36+$21.40=$57.60
$57.60-$50.40=$7.20 answer
Can anyone help me see my answers and working correctly or any other method?
Thank you
3m=4e
6m = 8e
After bought 6m + 4e he left with 21.6
8e+4e = 12e
28-12=16
16e→21.60
1e= $1.35
Your working is correct, due to minor mistake 1m=2e.
See 1 Answer
So, ×2 to get 6m = 8e
Hence 6m + 4e, we replace 6m to 8e
Became 8e + 4e = 12e
As given, she have enough money to buy 28e, after use 12e, she left 21.60
So, we can use 28e - 12e = 21.60
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