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vesna_86 [32]
2 years ago
12

3. A wire of length 90 cm is cut into three pieces. The lengths of the pieces are in the ratio 3:5:7. Calculate the length of (a

) the longest piece. (b) the difference between the longest and the shortest piece. 3:5:1 Wire length: 90 cm​
Mathematics
2 answers:
tamaranim1 [39]2 years ago
8 0

Answer:

Step-by-step explanation:

First, simplify into the parts given by sum of ratio values.

90cm / 15 = 6 cm

(a) longest piece

= 7 x 6 = 42 cm

(b) difference between longest and shortest

shortest = 3 x 6 = 18 cm

Difference = 42 - 18 = 24 cm

Nata [24]2 years ago
4 0

the difference between the longest and the shortest piece

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