Step-by-step explanation:

Learning Task 4:

\frac{N}{4}

4

N

= 3 ; N = 12

56 - 36 = N ; N = 20

36 km: 1 hr = 420 km: N ; N = 12 hrs

Solutions:

1. Let N be the number of pens in the box.

Given: 4 - friends who have shared the box of pens

3 - number of pens each friend had received

Equation: \frac{N}{4}

4

N

= 3

Answer: \frac{N}{4}

4

N

= 3

N = (3)(4)

N = 12

Therefore, there are 12 pens in the box.

2. Let N be the number of pupils who did not join the field trip

Given: 56 - number of pupils in a class

36 - number of pupils who have joined the field trip

Equation: 56 - 36 = N

Answer: 56 - 36 = N

20 = N

Therefore, there are 20 pupils who did not join the field trip.

3. Let N be the number of hours it will take the car to travel 432 km

Given: 36 km/hr - speed of the car

432 km - distance covered by the car

Equation: 36 km : 1 hr = 432 km : N

Answer: 36 km : 1 hr = 432 km : N

(36 km)(N) = (1 hr)(432 km)

36 km N = 432 km/hr

36 km 36 km

N = 12 hrs

Therefore, it will take the car 12 hrs to travel 432 km.

How to solve problems involving algebraic expressions: brainly.ph/question/6141409

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