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P5 Mathematics

Question post on Wed, 09/02/2022 5:35pm

Please help P5 math.

Grace and Janice had an equal amount of money at first. After Grace spent $245 and Janice spent $74, Janice had 4 times as much money as Grace. How much money did each girl have at first.

Thanks for helping.

Answer

Adwin · Answer 1 · Post on Wed, 09/02/2022 8:51pm

Adwin Post on Wed, 09/02/2022 8:51pm

Adwin · Answer 2 · Post on Wed, 09/02/2022 8:51pm

Adwin

Post on Wed, 09/02/2022 8:51pm

hnghng · Answer 3 · Post on Wed, 09/02/2022 10:00pm

hnghng Post on Wed, 09/02/2022 10:00pm

Thank you so much Adwin!

ChiefKiasu · Answer 4 · Post on Wed, 09/02/2022 9:07pm

ChiefKiasu Post on Wed, 09/02/2022 9:07pm

Thanks, Adwin! I still find the “model” answer rather confusing. Sigh.

kendi · Answer 5 · Post on Wed, 09/02/2022 10:24pm

kendi Post on Wed, 09/02/2022 10:24pm

hope that this could help you!!!

kendi · Answer 6 · Post on Wed, 09/02/2022 10:24pm

kendi

Post on Wed, 09/02/2022 10:24pm

hope that this could help you!!!

hnghng · Answer 7 · Post on Thu, 10/02/2022 9:00am

hnghng Post on Thu, 10/02/2022 9:00am

Thank you so much Kendi!

ChiefKiasu · Answer 8 · Post on Wed, 09/02/2022 9:03pm

Let G be the amount of money Grace had at first.
Let J be the amount of money Janice had at first

(1) G = J

(2) 4 * (G – 245) = J – 74

Substitute (1) into (2), we get
4G – 980 = G – 74
=> 3G = 906
=> G = 302

So both Grace and Janice had $302 at first #.

I will appreciate if someone can come up with a “model” solution!

hnghng · Answer 9 · Post on Wed, 09/02/2022 10:01pm

hnghng Post on Wed, 09/02/2022 10:01pm

Thank you so much ChiefKiasu!