If a box of sweets is divided among 24 children, they will get 5 sweets each. How many would each get, if the number of the children is reduced by 4?

3

(a)

A farmer has enough food to feed 20 animals in his cattle for 6 days. How long would the food last, if there were 10 more animals in his cattle?

3

(a)

A work-force of 420 men with a contractor can finish a certain piece of work in 9 months. How many extra men must be needed to complete the job in 7 months?

3

(a)

In which of the following case, do the quantities vary directly with each other.

p	12	22	32	42
q	13	23	33	43

3

(a)

l varies directly as m and l=5 when \(m=\frac{2}{3}\)find l, when \(m=\frac{16}{3}\).

3

(a)

If two cardboard boxes occupy 1000 cm³ space, then how much space is required to keep 200 such boxes?

3

(a)

The mass of an aluminium rod varies directly with its length. If a 16 cm long rod has a mass of 192 g, then find the length of the rod whose mass is 105 g.

3

(a)

Under the condition that the temperature remains constant, the volume of gas is inversely proportional to its pressure. If the volume of gas is 530 cm³ at a pressure of 360 mm of mercury, that what will be the pressure of the gas if its volume is 1060 cubic centimetres at the same temperature?

3

(a)

If a deposit of Rs 3000 earns an interest of Rs.600 in 3 years, then how much interest would a deposit of Rs. 36000 earn in 3 yr with the same rate of simple interest?

3

(a)

88 cows can graze a field in 18 days. How many less/more cows will graze the same field in 12 days?

3

(a)

Shabnam takes 20 min to reach her school if she goes at a speed of 6 km/h. If she wants to reach school in 24 min, what should be her speed?

3

(a)

In a PG House, the food provision for 20 persons is for 10 days. How long would the food provision last if there were 5 more persons in that PG house?

3

(a)

A contractor estimates that 5 persons complete a task in 4 days. If he uses 4 persons instead of 5, how long should they take to complete the task?

3

(a)

A school has 9 periods a day each of 50 minutes duration. How many period will there be, if the duration of every period is reduced by 5 minutes?

3

(a)

Think of a few more examples for direct proportion.

3

(a)