Number Magic a textbook of Mathematics 8>Chapter 28 - Enrichment Activities (Based on Chapters 1–6)>ENRICHMENT ACTIVITIES (Based on Chapters 1-6)>Q D

MEDIUM

8th CBSE

IMPORTANT

Earn 100

A man invested $₹ 3500$ , a part of it at an annual interest rate of $12 %$ and the rest at $14 %$ If after a year, he received $₹ 450$ as annual interest, how much did he invest at each rate?

Important Questions on Enrichment Activities (Based on Chapters 1–6)

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 28 - Enrichment Activities (Based on Chapters 1–6)>ENRICHMENT ACTIVITIES (Based on Chapters 1-6)>Q D

A fruit vendor buys some oranges at the rate of

₹ 5

per orange. He also buys an equal number of bananas at the rate of

₹ 2

per banana. He makes a profit of

20 %

on oranges and

15 %

on bananas. At the end of the day, all the fruits is sold out. His total profit is

₹ 390

. Find the number of oranges purchased.

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 28 - Enrichment Activities (Based on Chapters 1–6)>ENRICHMENT ACTIVITIES (Based on Chapters 1-6)>Q D

A B C D E

is a regular pentagon. The bisector of

∠ A

of the pentagon meets the side

C D

in

M

. Show that

∠ A M C = 90 °

.

EASY

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 28 - Enrichment Activities (Based on Chapters 1–6)>ENRICHMENT ACTIVITIES (Based on Chapters 1-6)>Q D

A playground is in the shape of a convex quadrilateral. Two of its interior angles are right angles. If the remaining two angles are in the ratio

4 : 5,

find the measure of all interiors angles.

MEDIUM

8th CBSE

IMPORTANT

Number Magic a textbook of Mathematics 8>Chapter 28 - Enrichment Activities (Based on Chapters 1–6)>ENRICHMENT ACTIVITIES (Based on Chapters 1-6)>Q D

Construct a parallelogram $A B C D$ in which $A C = 7.6 cm$ , $B D = 4.8 cm$ and the angle between the diagonals is $75 °$ .