Cost of a dozen pens is Rs.180 and cost of 8 ball pens is Rs. 56. Find the ratio of the cost of a pen to the cost of a ball pen.

3

(a)

If the side of an equilateral triangle is same as the side of a square, then find the ratio of the perimeter of the triangle and square.

3

(a)

Amit and Suresh donated an amount of Rs.4000 and Rs.5500 respectively in a charity fund. What is ratio of the amount donated by them?

3

(a)

Is it possible to find the ratio of two quantities of different kind?

3

(a)

Check whether the given ratios are equal, i.e. they are in proportion. If yes, then write them in the proper form. 15: 45 and 5 : 25

3

(a)

Check whether the given ratios are equal, i.e. they are in proportion. If yes, then write them in the proper form. 4: 12 and 9 : 27

3

(a)

Check whether the given ratios are equal, i.e. they are in proportion. If yes, then write them in the proper form. Rs.10 to Rs.15 and 4 to 6

3

(a)

If the ratio between 72 and y is same as the ratio between 64 and x, then what is the ratio between x and y?

3

(a)

If it has rained 276 mm in the last 3 days, how many centimetre of rain will fall in one full week (7 days)?Assume that the rain continues to fall at the same rate.

3

(a)

The temperature dropped 15 degree celsius in the last 30 days. If the rate of temperature drop remains the same, how many degrees will the temperature drop in the next 10 days?

3

(a)

The weight of 72 books is 9 kg. What is the weight of 40 such books?

3

(a)

Raju purchases 10 pens for Rs.150 and Manish buys 7 pens for Rs.84. Can you say who got the pens cheaper?

3

(a)

Anish made 42 runs in 6 overs and Anup made 63 runs in 7 overs. Who made more runs per over?

3

(a)

The sides of a triangle are in the ratio 2 : 3 : 5. If the total perimeter of the triangle is 70 cm, then find the length of the longest side.

3

(a)

Consider this situation. Raju went to the market to purchase tomatoes. One shopkeeper tells him that the cost of tomatoes is Rs. 40 for 5 kg. Another shopkeeper gives the cost as 6 kg for Rs. 42. Now, what should Raju do? Should he purchase tomatoes from the first shopkeeper or from the second? Will the comparison by taking the difference help him decide? No, why not? Think of some way to help him. Discuss with your friends.

3

(a)