Perry needed exactly 72 m of cloth to make 16 short identical flags and 8 long identical flags. He had some cloth which was just enough to make all the short flags and 3 long flags. He used 128
12 cm for each short flag.
- How much cloth would he need to make 1 long flag?
- How much cloth was he short of to make the remaining long flags?
(a)
Length of 16 short flags + Length of 8 long flags = 72 m
1 m = 100 cm
Length of cloth for each short flag
= 128
12 cm
= 128.5 cm
= 1.285 m
Length of cloth for 16 short flags
= 16 x 1.285
= 20.56 m
Length of cloth for 8 long flags
= 72 - 20.56
= 51.44 m
Length of cloth to make 1 long flag
= 51.44 ÷ 8
= 6.43 m
(b)
Number of remaining long flags that Perry needed
= 8 - 3
= 5
Length of cloth that he was short of
= Length of 5 long flags
= 5 x 6.43
= 32.15 m
Answer(s): (a) 6.43 m; (b) 32.15 m