hannahbaak
25.12.2021 •
Mathematics
the total cost of a watch and a radio is rs 500 .If the watch is cheaper than the radio by rs 150,find their cost
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Ответ:
Let cost of watch=r
w+r=500
but w=r-150
So;r-150+r=500
2r=500+150
2r=650
r=650/2
r=325
If r=325,
then w+r=500
w+325=500
w=500-325
w=175
Cost of watch=rs175
Cost of radio=rs325
Ответ:
explanation:divide the two numbers together