Q&A - P5 Math

[redruby]

--> Can anyone please explain the question ..?

Many Thanks in Advance

Quite difficult....can somebody help....

Hi,

Let's try.

If there are 4 pupils, everyone plays for 30 mins each.

If there are 8 pupils, everyone plays for 15 min each.

Hope this helps.

Cheers


speedmaths
.

[redruby]

It is a simple question. Answer is given wrongly in the answer sheet. Can someone give me the correct steps to derive the answer.

[guest2013]

Suggested answer:

When round off to nearest whole number, average number = 450.
Hence, smallest possible average = 449.5

Total smallest possible cases = 449.5 x 5 = 2247.5

Total for week 13 till 26 April
= 315 + 406 + 493 + 515+ 476
= 2205

2247.5 -2205 =42.5

Smallest possible on 27 April is 43.

=
=

[Daddy]

Plwase help on this question. Thank.

[nansk]

Plwase help on this question. Thank.

At the end, Wendy has:
1 U (from Yvonne) + 6 U (from Alan) + w (her original stickers) = 1680

The additional 7U is 1/4th, so the original number of stickers "w" is 4/4th = 28U.
So Wendy has:
7U + 28U = 1680
35U = 1680
U = 48

So at first, Yvonne had 5U = 240 stickers.

[Daddy]

Thank nansk.

[belnanna]

Can anyone please explain how to do this? Thanks a lot..

[belnanna]

Please can someone also teach this? Keep getting answer 20.. which is the wrong answer..
Thanks in advance!

[nansk]

Can anyone please explain how to do this? Thanks a lot..

The area of semi-circle = 77 sqcm.
So area of the whole circle will be 154 sqcm.
So radius will be sqrt(154 X 7 / 22)
Radius = 7 cm
Diameter = 14 cm

The diameter is the height of the triangle.
Area of the triangle = 1/2 X 14 X 14 = 98 sqcm

Area of the whole figure = 98 + 77 = 175 sqcm

[belnanna]

Margaret spent 30% of her salary on transport and $270 on clothes. She saved the remaining amount of her salary. If she saved $300 more than the amount she spent, how much was her savings?

Can someone please confirm the answer for this? My answer is different from the given answer...
Thanks in advance..