Question

Sudha has 15 marbles five times the marbles have been has Sudha has 35 marbles?

Answer 1

Answer:

Say Sudha has x marbles then

according to the condition

5x + 15 = 35

5x = 20

x = 4 (final answer)

Answer 2

Answer:

shudha has 15 marbles

5 times the marbles have been increased

now the marbles are 35

a1=15

d=?

an=35

n=6

an=a+(n-1)d

35=15+(6-1)d

35-15=5d

20/5=d

d=4

a2=a1+d=15+4=19

a3=a2+d=19+4=23

a4=a3+d=23+4=27

a5=a4+d=27+4=31

a6=a5+d=31+4=35

therefore 4 marbles have been increased per 1 time and marbles have been increased 5 times