Tutor MathsGuru: Ask me for your burning Maths questions!

[MathIzzzFun]

kitty2:

MathIzzzFun:

[quote=\"kitty2\"]Please Help :?: Thanks.Please kindly give afew methods to solve them if you've any.


1) Ric earned $3 for each box of sweets sold.He also received a commission of $8 for every 15 boxes of sweets sold.How much money did he earn if he had sold 220 boxes of sweets?

2)For every watch that may repairs,she's paid $20,A bonus of $60 is given to her for every 50 watches she repaired.How many watches must she repair to earn $5560

Hi

both questions are similar..

1) Amount earned for every 15 boxes = $ 3 x 15 + $ 8=$53
220/15= 14 R10
Amount earned = 14 x $ 53 + 10 x $ 3=$772

2) For every 50 watches repaired, amount earned = $20 x 50 + $60=$1060
5560/1060= 5R260
Number of watches she must repair to earn $5560= 5 x 50 + $260/$20 = 263

cheers.

:thankyou:[/quote]u r welcome

cheers.

[kwcllf]

Hi, please help


Jolene and Penny had a sum of money. Jolene gave Penny 0.4 of her money. Penny then gave Jolene 1/2 of her money. In the end, Jolene had 3 times the amount of money that Penny had. If Jolene gave Penny $125 more that what Penny gave Jolene, how much money did Jolene have at first?

Thanks

[MathIzzzFun]

kwcllf:

Hi, please help


Jolene and Penny had a sum of money. Jolene gave Penny 0.4 of her money. Penny then gave Jolene 1/2 of her money. In the end, Jolene had 3 times the amount of money that Penny had. If Jolene gave Penny $125 more that what Penny gave Jolene, how much money did Jolene have at first?

Thanks

Hi

for this type of question, it is best to draw a diagram to see the transfers...I will use units here..

After Penny gave Jolene 1/2 her money,
Jolene = 9 units
Penny = 3 units

So, before Penny gave Jolene her money,
Jolene = 6 units
Penny = 3 units ... Penny gave 3 units

This is after Jolene gave 0.4 of her money ie 6 units = 0.6 of Jolene's money at first. At first, Jolene had 10 units ie Jolene gave 4 units to Penny

4 units - 3 units = 1unit = $ 125
Jolene had 10 units = $ 1250

cheers.

[kwcllf]

Hi MathIzzzFun,


Thanks Again

[MathIzzzFun]

kwcllf:

Hi MathIzzzFun,


Thanks Again

u r welcome

cheers.

[Herbie]

can help with the qn below??

a stairs with 10 steps. U can either take one step or 2 step at a time. How many ways can u go up the stairs?

Tq

[MathIzzzFun]

Herbie:

can help with the qn below??

a stairs with 10 steps. U can either take one step or 2 step at a time. How many ways can u go up the stairs?

Tq

Hi

math olympiad question?

I think you can find solutions to similar type question in the math olympiad thread. You can solve this using the Fibonacci numbers.

Nx = number of ways to go up x steps

Number of ways to go up a 10 steps, N10
= Number of ways to go up 9 steps and then do a 1-step
+ Number of way to go up 8 steps and then do a 2-step
=N9+N8

working backwards, we have N9=N8+N7, N8=N7+N6... N3=N2+N1
N1=1
N2=2
N3=1+2=3
N4=2+3=5
N5=3+5=8
N6=5+8=13
N7=8+13=21
N8=13+21=34
N9=21+34=55
N10=34+55= 89

there are 89 ways to walk up 10 steps using 1 step or 2 steps.

cheers.

[Herbie]

thanks mathizzzfun.

[MathIzzzFun]

Herbie:

thanks mathizzzfun.

u r welcome

cheers.

[Essential]

Math Guru, pls help me with this question

Renjie has three ropes with length of 144,168 cm and 252cm. He wants to cut the three ropes into shorter pieces of equal length with no remainders a) what is the greatest possible length of each of the shorter pieces? b) how many of the shorter pieces of equal length can he get?