Question

S - ? T=30 min D= 140KM​

Answer 1

Step-by-step explanation:

+25×1+40×2

The distance covered=30× 21

+25×1+40×2=120km

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5h

+25×1+40×2=120kmTime taken=0.5+1+2=3.5hHence,Average speed= 3.5

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5hHence,Average speed= speed= 3.5120

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5hHence,

Average speed= 3.5120 =34.286km/h

Answer 2

Step-by-step explanation:

+25×1+40×2

The distance covered=30× 21

+25×1+40×2=120km

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5h

+25x1+40×2=120kmTime taken=0.5+1+2=3.5hHence,Average speed= 3.5

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5hHence,Average speed= speed= 3.5120

The distance covered=30× 21 +25×1+40×2=120kmTime taken=0.5+1+2=3.5hHence,

Average speed= 3.5120 =34.286km/h