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primary 6 | Maths
| Data Analysis
2 Answers Below
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Pls help ASAP
Date Posted: 2 years ago
Views: 364
continuing from tutor gerry’s answer!
i think what tutor gerry is trying to say, is that the total $$ the 50c coins make up, minus away the total $$ the 20c coins make up, will give you a remainder of $9 (like what the question says).
we cannot tell how many coins there is, but we know there’s the same no. of 50c and 20c (from the graph)
using guess and check, tutor gerry found out that 30 pieces of 50c coins = $15, 30 pieces of 20c coins = $6. $15 minus $6 = $9. so 30 pieces of coins is correct.
on the graph, 20c coin got 6 lines, 50c coin also have 6 lines. so how many coins represent 1 line? it’ll be 30 divide by 6, so 5 coins represent 1 line.
therefore, $27 - $15 - $6 = $6 (total $$ that 10c coins make up).
how many 10c coins give us $6? $6 divide by 0.10 = 60 pieces of 10c coins.
so how many lines do you have to shade, if 1 line = 5 coins? 60 pieces of coins divide by 5 coins/line = 12 lines.
i think what tutor gerry is trying to say, is that the total $$ the 50c coins make up, minus away the total $$ the 20c coins make up, will give you a remainder of $9 (like what the question says).
we cannot tell how many coins there is, but we know there’s the same no. of 50c and 20c (from the graph)
using guess and check, tutor gerry found out that 30 pieces of 50c coins = $15, 30 pieces of 20c coins = $6. $15 minus $6 = $9. so 30 pieces of coins is correct.
on the graph, 20c coin got 6 lines, 50c coin also have 6 lines. so how many coins represent 1 line? it’ll be 30 divide by 6, so 5 coins represent 1 line.
therefore, $27 - $15 - $6 = $6 (total $$ that 10c coins make up).
how many 10c coins give us $6? $6 divide by 0.10 = 60 pieces of 10c coins.
so how many lines do you have to shade, if 1 line = 5 coins? 60 pieces of coins divide by 5 coins/line = 12 lines.
See 2 Answers
First problem is that we don't know what 1 line represents how many coins on the graph. But we do know she has same nimber of 50 cents and 20 cents coins.
Guess and check:
20 x 50cents - 20 × 20cents = $6
30 x 50cents - 30 × 20cents = $9
So she has 30 of each 50 cent and 20 cent.
Then since they have 6 lines on the graph,
30 ÷ 6 = 5. 1 line represents 5 coins.
So $27 - 30 × 50cents - 30 x 20cents =$6
And $6 ÷ 10cents = 60 coins
Guess and check:
20 x 50cents - 20 × 20cents = $6
30 x 50cents - 30 × 20cents = $9
So she has 30 of each 50 cent and 20 cent.
Then since they have 6 lines on the graph,
30 ÷ 6 = 5. 1 line represents 5 coins.
So $27 - 30 × 50cents - 30 x 20cents =$6
And $6 ÷ 10cents = 60 coins
Srry but i dont understand from this mayne if you showed the drawing and working on paper i would understand abit more. Thank you for your help though!
Not quite clear
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from tutor gerry’s answer!
Date Posted:
2 years ago
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