integers, mensuration and ratio and proportion revision

Simplily the ratio:

3 hours to 45 mins

(a)  

It is an equation that shows that two ratios are equal.

• Proportion

• Ratio

• Extremes

• Product

A number is directly proportional to another when as one value increases....

• the other value also increases

• the other value also decreases

• the other value doubles

• the other value remains

Determine which pair of fractions show a proportion.

• 5/12 and 10/25

• 3/6 and 21/42

• 18/10 and 2/3

• 1/2 and 10/19

Express the following ratio in simplest form:

20:45

• 10:22.5

• 4:9

• 40:90

• 5:9

The cost of 1 dozen bananas is ₹ 30. The cost of 6 oranges is ₹ 18. The ratio of the cost of a i banana to the cost of an orange is

• 3:2

• 2:3

• 6:5

• 5:6

A BASKET HAS 30 items, find the number of items that two person A and B gets if the items are divided in the ratio of 2:3

• 14 and 16

• 12 and 18

• 9 and 21

• none of these

On a house blueprint, feet is represented by inch. If a room on the blueprint measures inches by inches, what is the area of the actual room?

• 30 square feet

• 60 square feet

• 90 square feet

• 120 square feet

Answer explanation

If 1 inch is 2 feet, then 5 inches is 10 feet, while 6 inches is 12 feet. Hence, the actual dimensions of the room is 10 feet by 12 feet. Thus the area is 10×12=120  sq feet.