Answer:
1)She ran 4 23/60 km in 2 days
2)3/20
3)3/4
Explanation:
1)
Thrus - (37/20)km
Fri - (38/15)km
Total = (37/20)+(38/15)
= [(37×3)/(20×3)]+ [(38×4)
/(15×4)] (make denorminator same)
= (111/60)+(152/60)
= 263/60
= 4 23/60
2)
(3/10)×(2/4)
= (3/10)×(1/2)
= (3×1)/(10×2)
= 3/20
3)
(1/2)÷(2/3)
= (1/2)×(3/2)
= (1×3)/(2×2)
= 3/4