maths nvq2 How do you work this out ?

[james2]

I could not work this one out ,can someone explain it please. 

A guy has a roll of ribbon thats 25m long he cuts it into 90cm lengths to tie on a gift, how many rolls will he need for 500 gifts ?    i just guest 5 

[tweed]

18

[hobbiniho]

19 rolls

[james2]

How do you work it out because you have to show how you got your answer ?

[tweed]

No its 18 

[tweed]

2500÷90 = 27.7777777778
27.7777777778×18 = 500

[hobbiniho]

No its 18 

i disagree 25/0.9=27.777.... so thats 27 bits of ribbon that are 90cm per roll with a bit of wastage, 500/27=18.5185... so you need 19 rolls as if you only had 18 rolls there would be 14 presents without a bit of ribbon thats 90cm long

[tweed]

No its 18 

i disagree 25/0.9=27.777.... so thats 27 bits of ribbon that are 90cm per roll with a bit of wastage, 500/27=18.5185... so you need 19 rolls as if you only had 18 rolls there would be 14 presents without a bit of ribbon thats 90cm long

Ok 19 rolls 

[dom]

Definitely 19 rolls, as hobbiniho says, you get 27 full lengths of ribbon from each roll. The 0.77 is useless and cannot be used as part of a 90cm length.

If you divide 500 gifts by 27 lengths of 90cm you get 18.5 rolls

Again, part rolls are no good. 18 rolls * 27 lengths =486 gifts therefore 19 rolls are needed to do the full 500 gifts.

[tweed]

Definitely 19 rolls, as hobbiniho says, you get 27 full lengths of ribbon from each roll. The 0.77 is useless and cannot be used as part of a 90cm length.

If you divide 500 gifts by 27 lengths of 90cm you get 18.5 rolls

Again, part rolls are no good. 18 rolls * 27 lengths =486 gifts therefore 19 rolls are needed to do the full 500 gifts.

My bad 19 lol I put that at first then changed it