Question

-*su Uut CUSU UT 12 SUITESIS CLS.
9. Tanu can type 15 words in 27 s. Find the number of words she can type in 3 minutes.
10. Sarita earns 8000 in 10 days, find her earnings in the month of October.
11. The ages of Rohit and Mohit are in the ratio of 5 : 6. If Rohit is 25 years, find age of
Mohit.
12. The ratio of length to the width of a room is 5:3. Find the length if breadth is 6.9 m.
13. A maglev train travels 3000 km in 5 hours. Find the distance travelled by train in 8 h.​

Answer 1

Answer:

9)100 words

10)24800

11)30 years

12)11.5m

13)4800km

Step-by-step explanation:

9) 15 words in 27s

let x be the number of words that can be typed in 3 minutes (180 seconds)

x=(180 ×15)/27

=100 words

10)8000 in 10 days

no. of days in October = 31

earnings in October =(31×8000)/10

=24800

11) 5/6 = 25/x

x=(25×6)/5

=30years

12) 5/3 = x/6.9

x=(6.9×5)/3

=11.5m

13)3000 km in 5 hr

x km in 8 hr

x=(3000×8)/5

x=4800km