MATHS CLASS 8 CH - 8 COMPARING QUANTITIES MENTAL MATHS

Increase or decrease % =

• (Original amount / Increase or decrease) *100

• (Increase or decrease / Original amount) *100

• none

Discount % =

• (Discount / Marked price) *100

• (Marked price / Discount) *100

• none

Profit or Loss % =

• (P or L / C.P)*100

• none

• (C.P / P or L)*100

C.I =

• P- A

• S.I - P

• A-P

• none

S.I =

• PRT/100

• 100/PRT

• P-A

• none

Find x if 4, x, 25 are in proportion

What is 25% of 200

Find the S.I on ₹5000 for 2 years at the rate of 5% p.a.

If 33% of a is 132 . Find a

Find the difference between a rupee and 1% of rupee

• 95 paise

• 99 paise

• 90 paise

• none