Question

Roxanne has 1/2 as many beads as Sherrie. The number of beads Sherrie has is 4/5 that of Ting Ting's. Ting Ting has 165 beads. How many more beds does Ting Ting have than Roxanne?

Answer 1

R=1/2S    (names abbreviated)
S= 4/5T
T=165 beads
S= 4/5X 165           S=132
R= 1/2X 132              R=66

165 beads-66 beads= 99 beads  R has 99 more beads than TT

Answer 2

165 Ting Ting's beads* (4 Sherrie's beads/ 5 Ting Ting's beads)= 132 Sherrie's beads.
132 Sherrie's beads* (1 Roxanne's bead/ 2 Sherrie's beads)= 66 Roxanne's beads.
Now that we know the number of beads Roxanne and Ting Ting have, let's subtract:
165 beads- 66 beads= 99 beads.
Hope this would help :))