a watch and a pen together cost rs 140 if the cost of the watch is six times the cost of the pen then what is the cost of the watch
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Answer:
Step-by-step explanation:
w + p = 140 rs
cost of pen = x
cost of watch = 6x
6x + x =140
7x = 140
x =140/7
=20
cost of watch = 6x
=6 *20
=120
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