Doris drives at a steady speed of 40 km/h. If she sets off at 1.35pm and arrives at 3.50pm, how far has she travelled?

She has travelled 50km.

Step-by-step explanation:

The difference in time from 1.35pm to 3.50 is 75 mins, or 1hr 15mins.

She drives at 40km/h.

1hr = 40km

15mins (or 1/4 of an hour) = 10km

40 + 10 = 50

She has travelled 50km.

Step-by-step explanation:

Find the time in travel:

Find the distance travelled:

10000

step-by-step explanation: divide by 2,

m∠cdf = 43° , m∠gdf = 114°, m∠gde = 23°, m∠edh = 23° , m∠cdh = 157°

step-by-step explanation:

since, it is given that de bisects the angle gdh ⇒ de divides the angle gdh into two equal angles.

⇒ m∠gde = m∠edh

⇒ 8·x   - 1 = 6·x + 5

⇒ x = 3

so, m∠gde = 8·x - 1 = 23°

and m∠edh = 23°

now, it is given ∠cde is an straight angle so, m∠cde = 180°

⇒ m∠cdf + m∠fdg + m∠gde = 180°

⇒ 43° + m∠fdg + 23° = 180°

⇒ m∠fdg = 114°

again, m∠cde = m∠cdh + m∠edh = 180°

m∠cdh + 23° = 180°

⇒ m∠cdh = 157°