ECT-RATIO & PROPORTIONS

The ratio of boys and girls in a college is 7 : 8. If the percentage increase in the number of boys and girls is 20% and 10% respectively, what will be the new ratio?

• 19 : 20
• 21 : 22
• 20 : 21
• 14 : 15

Simplify the ratios: 1/4 : 1/6 : 1/8

• 2 : 3 : 4
• 1 : 2 : 3
• 6 : 4 : 3
• 4 : 6 : 8

If the ratio of men to women in a company is 3 : 5, how many men are there in a company with a total of 160 employees?

• 80
• 70
• 50
• 60

In a school, the ratio of students to teachers is 25 : 2. If there are 400 students, how many teachers are there?

• 50
• 40
• 20
• 32

If 8, m, 6, 54 are in proportion, then the value of m is

• 90
• 36
• 72
• 48

Two numbers are in ratio 3 : 5. If sum of the numbers is 288, the larger one is

• 150
• 180
• 120
• 240

If a dozen of eggs costs Rs. 90.84, how many eggs can be bought for Rs. 166.54?

• 18
• 12
• 22
• 30

If the cost of 17 metres carpet is rs. 340, find the cost of 11 metres.

• 150 Rs.
• 300 Rs.
• 220 Rs.
• 180 Rs.

Alex can type 2820 words in one hour. How many words can he type in 15 minutes?

• 560 words
• 840 words
• 705 words
• 900 words

If x: y = 3: 5, find the ratio 3x + 4y: 8x + 5y

• 29:49
• 18:30
• 12:20
• 15:25