Vidaara.orgClass 8 · Mathematics
CodeVID-M08-21-DSI-01
Discount & Simple Interest - Assignment
Name: ____________________
Roll No.: __________
Date: ____________
General Instructions
- All questions are compulsory.
- Section A carries 1 mark each, Section B 2 marks, Section C 3 marks and Section D 5 marks.
- Show all working for Sections B, C and D. Only final answers are given at the end — for full solutions, raise your doubts with your teacher.
Section A — Multiple Choice Questions
5 × 1 = 5 marks
1.
A discount is a reduction on the:
- A.cost price
- B.marked price
- C.selling price
- D.profit
2.
Selling Price $=$
- A.MP $+$ Discount
- B.MP $-$ Discount
- C.MP $\times$ Discount
- D.Discount $-$ MP
3.
Simple Interest $=$
- A.$\tfrac{P\times R\times T}{100}$
- B.$P+R+T$
- C.$\tfrac{P}{RT}$
- D.$PRT$
4.
The marked price is also called the:
- A.cost price
- B.list price
- C.net price
- D.bill
5.
Amount $=$
- A.Principal $-$ Interest
- B.Principal $+$ Interest
- C.Interest only
- D.Principal only
Section B — Short Answer (2 marks)
4 × 2 = 8 marks
6.
Find a $10\%$ discount on Rs $500$.
7.
MP $=$ Rs $800$, discount $=$ Rs $80$. Find the SP.
8.
Find the SI on Rs $1000$ at $5\%$ for $2$ years.
9.
Find the SI on Rs $2000$ at $10\%$ for $1$ year.
Section C — Short Answer (3 marks)
4 × 3 = 12 marks
10.
A shirt marked Rs $1200$ has a $25\%$ discount. Find the SP.
11.
Find the SI on Rs $5000$ at $8\%$ for $3$ years.
12.
MP $=$ Rs $1500$, SP $=$ Rs $1275$. Find the discount$\%$.
13.
Find the amount on Rs $4000$ at $5\%$ for $2$ years (SI).
Section D — Long Answer (5 marks)
2 × 5 = 10 marks
14.
An article marked at Rs $2000$ is sold at a discount of $15\%$. Find the discount and the selling price.
15.
Find the simple interest and the amount on Rs $6000$ at $10\%$ per annum for $3$ years.
Answer Key
Section A — Multiple Choice Questions
- (B) marked price
- (B) MP $-$ Discount
- (A) $\tfrac{P\times R\times T}{100}$
- (B) list price
- (B) Principal $+$ Interest
Section B — Short Answer (2 marks)
- Rs $50$.
- Rs $720$.
- Rs $100$.
- Rs $200$.
Section C — Short Answer (3 marks)
- Rs $900$.
- Rs $1200$.
- $15\%$.
- Rs $4400$.
Section D — Long Answer (5 marks)
- Discount Rs $300$; SP Rs $1700$.
- SI Rs $1800$; amount Rs $7800$.
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