Tutor MathsGuru: Ask me for your burning Maths questions!

[Dharma]

peapot:

Thank Dharma,


But my gal haven't grasp the concept that 999-99 is 900 yet. Any other easier way, I wonder?

Actually I chose 999 to minus 99 to show the hundreds place of the answer to the question cannot be 9 because the ones digit of the answer is 1

You may wish to break up the number 999 into it's hundreds, tens and ones.
Do the same for 99. Then deduct 99 from 999

999 = 900 + 90 + 9
99 = 90 + 9

999 - 99 = 900

[peterch]

Please help me with P5 math :


Ms Tham distributed a packet of sweets among a group of pupils.
If she gave out 11 sweets to each pupil, the last pupil received only 6 sweets.
If she gave out 8 sweets to each pupil, there would be 34 sweets left over.
A. How many pupils were there?
B. How many sweets were there?

Thanks in advance

[hashroop]

Pls help :

The volume of a rectangular tank is 162litters. It’s length is twice its breadth and 2/3 its height. Find the length of the tank.
Maths guru kindly help.
Greatly appreciated

[Yu Xuan]

peterch:

Please help me with P5 math :


Ms Tham distributed a packet of sweets among a group of pupils.
If she gave out 11 sweets to each pupil, the last pupil received only 6 sweets.
If she gave out 8 sweets to each pupil, there would be 34 sweets left over.
A. How many pupils were there?
B. How many sweets were there?

Thanks in advance

By giving each pupil 3 sweets more, a total of 39 sweets (34 + 5) is required.

a) Hence, the number to students is
39 / 3 = 13

b) 13 * 8 + 34 = 138

Yu Xuan

[iFruit]

hashroop:

Pls help :

The volume of a rectangular tank is 162litters. It's length is twice its breadth and 2/3 its height. Find the length of the tank.
Maths guru kindly help.
Greatly appreciated

Let breadth = b
length = 2b
height = 3/2 (2b) = 3b

volume = length x breadth x height = 2b x b x 3b = 6xbxbxb = 162---->b x b x b=27 = 3x3x3----> b=3

length = 2b =6

HTH.

[Yu Xuan]

hashroop:

Pls help :

The volume of a rectangular tank is 162litters. It's length is twice its breadth and 2/3 its height. Find the length of the tank.
Maths guru kindly help.
Greatly appreciated

Length --> 2 units
Breadth --> 1 unit
Height --> 3 units

162 L --> 162000 cm3

2u * 1u * 3u --> 162000
6 * u * u * u --> 162000
u * u * u --> 162000 / 6 =27000
30 * 30 * 30 --> 27000

Hence , 1 unit is 30cm.
Length --> 2 units * 30cm = 60cm

Yu Xuan

[peterch]

Yu Xuan:

peterch:

Please help me with P5 math :


Ms Tham distributed a packet of sweets among a group of pupils.
If she gave out 11 sweets to each pupil, the last pupil received only 6 sweets.
If she gave out 8 sweets to each pupil, there would be 34 sweets left over.
A. How many pupils were there?
B. How many sweets were there?

Thanks in advance

By giving each pupil 3 sweets more, a total of 39 sweets (34 + 5) is required.

a) Hence, the number to students is
39 / 3 = 13

b) 13 * 8 + 34 = 138

Yu Xuan

Hi, thanks a lot for your kind help

[Florence88]

Mathsguru

thanks in advance


Q1. there are 32 visitors in the auditorium. 2/5 of the men and 1/4 of the women were from Singapore. Total number of visitors who came from Singapore was 11. how many men came from Singapore

[iFruit]

Florence88:

Mathsguru

thanks in advance


Q1. there are 32 visitors in the auditorium. 2/5 of the men and 1/4 of the women were from Singapore. Total number of visitors who came from Singapore was 11. how many men came from Singapore

Let men in auditorium = 5m---> Men from s'pore = 2m
Let women in auditorium = 4w---> women from s'pore = w

5m+4w = 32
2m+w = 11--->8m + 4w = 44

from the above 2 equations, 3m = 12--> m =4

men from s'pore = 2m = 8

HTH

[hashroop]

iFruit:

hashroop:

Pls help :

The volume of a rectangular tank is 162litters. It's length is twice its breadth and 2/3 its height. Find the length of the tank.
Maths guru kindly help.
Greatly appreciated

Let breadth = b
length = 2b
height = 3/2 (2b) = 3b

volume = length x breadth x height = 2b x b x 3b = 6xbxbxb = 162---->b x b x b=27 = 3x3x3----> b=3

length = 2b =6

HTH.

Dear Ifruit, thanks a ton! explanations were clear.