Section A
Long Answer Type :- (Do any 5 Questions)
01
Ritu borrowed some Amount at 12% per annum. She had to pay 180 as interest after 3
years. What sum did she Barrow?
22 What sum of money lent out at 10% per annum would produce 150 in 5 years.
03
A railway ticket costs 720. A further 2% tax of this Amount is added to it. What is the
total Amount of this ticket?
04
A car takes 7 hours to cover a certain distance at a speed of 48km/hr. If the speed is
decreased by 20km/hr, how much time will it take to cover the same distance?
05
Gautam takes 5 hours to paint a wall and Gambhir takes 6 hours to paint the same wall
If they work together how long they will take to paint the wall.
16 In how much time will the interest on 1800 at 12.5% per annum be 3125?
(15)
Short Answer Type: - All Questions are compulsory
07 What is the Percentage value of
i. 3:4
ii. 1:2
8 What Percent of
i. 60 is 600
ii. 50 is 250
9 10 workers are paid 1680 for one day. How much money will be paid to 28 worker
he day?
Answers
Step-by-step explanation:
1) Rate of interest = 12°/•
Simple Interest = ₹ 180
Time = 3 years
Principal Amount = (SI × 100) / r ×t
= 180×100 / 12×3
= ₹500
2) Rate of interest = 10°/•
Simple Interest = ₹ 150
Time = 5 years
Principal Amount = (SI × 100) / r ×t
= 150×100 / 10×5
= ₹300
3) Cost of railway ticket = ₹720
Tax applied on ticket = 2°/•
Total cost of ticket = 2°/• of 720 + 720
= 2×720/100 + 720
= 1440/100 +720
= 14.4 + 720
= ₹734.4
4) Speed of car = 48 km/h
Time taken = 7 hours
Distance covered = speed × time
= 48×7
= 336 km
If speed is decreased by 20 km/h
New speed of car = 48-20
= 28 km/h
Distance covered = 336 km
Time taken = Distance / speed
= 336/28
= 12 hours
6) Rate of interest = 12.5 °/•
Principal Amount = ₹ 1800
Simple Interest = ₹3125
Time = SI×100 / p×r
= 3125×100 / 1800×12.5
= 250/18
= 13 years and 8/9 months
7) (i) 75°/•
(ii) 50°/•
8) (i) 1000°/•
(ii) 500°/•
9) 10 workers are paid ₹1680 per day
money paid to 1 worker per day = 1680/10
= ₹168
Money paid to 28 workers per day = 28×168
= ₹4704
Hope it helps.