Anand earns rs 80 in 7 hrs and promode earns rs 90 in 12 hrs. The ratio of their earnins is
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8/9 is the ratio .............
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■80/7:90/12
●80*12/90*7
●960/630
●96/63
●32/21
Ans》32:21
●80*12/90*7
●960/630
●96/63
●32/21
Ans》32:21
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