Peter needed exactly 72 m of cloth to make 18 small identical flags and 6 big identical flags. He had some cloth which was just enough to make all the small flags and 3 big flags. He used 133
12 cm for each small flag.
- How much cloth would he need to make 1 big flag?
- How much cloth was he short of to make the remaining big flags?
(a)
Length of 18 small flags + Length of 6 big flags = 72 m
1 m = 100 cm
Length of cloth for each small flag
= 133
12 cm
= 133.5 cm
= 1.335 m
Length of cloth for 18 small flags
= 18 x 1.335
= 24.03 m
Length of cloth for 6 big flags
= 72 - 24.03
= 47.97 m
Length of cloth to make 1 big flag
= 47.97 ÷ 6
= 7.995 m
(b)
Number of remaining big flags that Peter needed
= 6 - 3
= 3
Length of cloth that he was short of
= Length of 3 big flags
= 3 x 7.995
= 23.985 m
Answer(s): (a) 7.995 m; (b) 23.985 m