Question

5. At parking stand of a school, Manish counted that there are 150 cycles, 80 scooters and
70 bikes. Find the ratio of the number of cycles to the total number of vehicles.

6. Divide 721 marbles between Raju and Monu in the ratio 4:3.

7. A Navodaya Vidyalaya has rectangular playground having length 1000 m and width
500 m. Find the following ratios:
(a) Length of playground to its width
(b) Width of playground to its length
(c) Length of playground to its perimeter
(d) Width of playground to its perimeter.

8. Find a in the following proportions:
(a) 3, a, 5, 20 (b) 120, a, 25, 100 (c) 145, 20, a, 160​

Answer 1

Answer:

5. 3/4

Step-by-step explanation:

total vehicles=cycle +scootets+ bikes

=150+80+70

=200

ratio of number of cycle to total number of vehicle

=150/200

=3/4

=3:4

Answer 2

5. ɴᴜᴍʙᴇʀ ᴏꜰ ᴄʏᴄʟᴇꜱ = 150

ɴᴜᴍʙᴇʀ ᴏꜰ ꜱᴄᴏᴏᴛᴇʀꜱ = 80

ɴᴜᴍʙᴇʀꜱ ᴏꜰ ʙɪᴋᴇꜱ = 70

ꜱᴏ , ᴛʜᴇ ᴛᴏᴛᴀʟ ɴᴜᴍʙᴇʀ ᴏꜰ ᴠᴇʜɪᴄʟᴇꜱ = 300

ɴᴜᴍʙᴇʀ ᴏꜰ ᴄʏᴄʟᴇꜱ = 150/300= 1/2 = 1:2

ʜᴇɴᴄᴇ , ᴛʜᴇᴇ ʀᴀᴛɪᴏ ᴏꜰ ᴄʏᴄʟᴇ ᴛᴏ ᴛʜᴇᴇ ᴛᴏᴛᴀʟ ɴᴜᴍʙᴇʀ ᴏꜰ ᴠᴇʜɪᴄʟᴇꜱ = 1:2 .

6. ʟᴇᴛ ᴛʜᴇ "x" ʙᴇ ᴛʜᴇ ᴄᴏᴍᴍᴏɴ ʀᴀᴛɪᴏ .

4x + 3x + = 721

= 7x = 721

= x = 721/7

x = 103

ꜱᴏ , ʀᴀᴊᴜ ᴡɪʟʟ ɢᴇᴛ ᴍᴀʀʙʟᴇꜱ = 103 × 4 =412ᴍᴀʀʙʟᴇꜱ

ᴍᴏɴᴇ ᴡɪʟʟ ɢᴇᴇᴛ ᴍᴀʀʙʟᴇꜱ = 103 × 3 = 309 ᴍᴀʀʙʟᴇꜱ .