Feeling sleepy during office hours?
Here 2 questions of Primary 5 & Primary 6 respectly for you to solve!!
Please give me the solution as well..
Cheers!!
Question 1 ( Primary 5)
There are 173 beads of yellow , red & green in a box. If there are 7 more green beads den the yellow ones & thrice more red den green, how many more red beads are there den yellow ones?
Question 2 ( Primary 6)
There are 50cent coins in Box A & 20cent coins in Box B. If there are 19 more coins in Box B & $1.30 more in Box A, wat is the total value of Box A?
Good Luck!!~
17 comments:
hmm ...
29 yellow
36 green
108 red???
so red has 79 more than yellow?
I gave up...Never did i know that nowadays Pri. school standard are so high.
Pri sch maths like A-mAths leh!
1st question using algreba...
got the same answer as above.
I tried out the 2nd question..
There is 17 of 50 cents & 36 of 20 cents. ;)
29 Y
36 G
108 R
$8.50 in box A.
how u guys get $8.50 ?
A maths! :P
use algebra lo :)
Louis, u r wrong abt this! Our bloggers very smart ley!! most of them know how to solve!!
algebic quiz yea ?
dandan commented: how u guys get $8.50 ?
There are X $0.50 pieces in box A.
There are Y $0.20 cent pieces in box B.
There are 19 more coins in box B than in box A, so the equation is:
X = Y - 19
Box A has $1.30 more than box B, so the equation is:
0.50X - 0.20Y = 1.30
Now, we can replace all instances of X in equation two with Y - 19.
0.50(Y - 19) - 0.20Y = 1.30
0.50Y - 9.5 - 0.20Y = 1.30
0.3Y = 10.8
Y = 36.
So there are 36 coins in box B.
So there are
X = 36 - 19 = 17 coins in box A
Since each coin in box A = $0.50, the total value of the coins is:
$0.50 * 17 = $8.50
(note, I could have solved for X directly by replacing Y with (X + 19)
Hope this answers your question.
dandan....zzzzzzzzzzzzzzzz........
fwah...
woo!! Marvellous!! lolz!!
but richard, primary don't know advance algebra..
hehez!!
ok la. they learn this earlier also good.
and learn to apply the principle to other stuff. y not? ;)
hahahaha... interesting!!! long time didn't do maths... Not bad i still can get the answer which means not bad i didn't give all back to my teacher... does primary student learn algebra? thought they still using diagram... dunno thats my time lah now very lost touch with all that.. interesting.. dandan post more leh.. kakakaka... 童年回忆
keke..
Ok lah..I go search den post for elydia to solve..
hahahahaa... can can thanks... but later can't solve xia suay ah.... :Þ
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