the number of pieces n and of chocolate and therefore the total weight m in grams are in direct proportion the weight of 15 pieces of chocolate is 180 grams find the weight of 20 pieces of chocolate
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Answer:
240
Step-by-step explanation:
given: m is directly proportional to n
=> m1 m2
___= ____
n1 n2
m1=180gm
n1=15 pieces
n2=20 pieces
m2=?
180 m2
___ = ___
15 20
cross multiply
m2×15= 180×20
m2 = 240 grams
20 pieces weight is 240gm
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