-7/10 -3/4 8/10 3/4
least/middle/middle/greatest
Step-by-step explanation:
T = beads of Ting Ting = 165
S = beads of Sherie.
R = beads of Roxanne.
S = 4/5 × T = 4/5 × 165 = 4 × 33 = 132 beads
R = 1/2 × S = 1/2 × 132 = 66 beads
Ting Ting has therefore 165 - 66 = 99 more beads than Roxanne.
First you need to work out how much string is needed -
256 pieces needed x 40cm each:
256 x 40 = 10240cm
Then, convert to metres (100cm = 1m)
10240 / 100 = 102.4m
Then, you work out how many balls are needed:
30 can fit into 102.4 3 times with .41m to spare. So, you need three balls of string, PLUS another one to cover the 41cm
So to conclude: 4 balls of string are needed.
