Question

7. The product of two numbers is 2160 and their L.C.M is 30, find their H.C.F.​

Answer 1

Answer:

Compound interest 2 years =Rs. 315

Let principal=Rs. P

Amount =Principal+Interest

=Rs. P+315

A=P(1+R/100)

n

P+315=P(1+10/100)

2

=P(11/100)

2

P+315=121P/100

100P+31500=121P

21P=31500

P=1500

Principal is Rs. 1500

Simple interest=P×R×T/100

S.I=1500×10×2/100

S.I=30000/100

S.I=300Rs.

Simple interest for 2 years at 10% on Rs. 1500 is Rs. 300.

Answer 2

Step-by-step explanation:

Given :- product of two numbers =2160

HCF=12

Find :- LCM=?

Solution:-

We know that product of two numbers equal to the product of their HCF and LCM

so,

a×b=HCF(a,b)×LCM(a,b)

2160=12×LCM

LCM=180