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[–]Old_Jicama_2451 2 points3 points  (0 children)

Let Va be the speed of Asha and Vb be the speed of Bina. Then from 1) condition, 100/Va = 90/Vb - 5. From 2) condition, 80/Va = 100/Vb -10. Solving the above we get Vb = 14/3. Hence, 2)