Question

lara and meera are collecting marbles. lara has double number of marbles meera has when meera's number of marbles is decreased by 8. lara had 20 marbles , (m)
write an equation about it

Answer 1

Answer:

We can write two equations
L = 2M
M = 18

Step-by-step explanation:

Let L and M represent initially the number of marbles that Lara and Meera have, respectively

Initially we have L = 2M since lara has double number of marbles meera has

This relationship should hold if the number of marbles Meera has increases or decreases

When Meera has 8 less marbles, she will have M - 8 marbles and Lara will have twice the amount which is 2(M - 8) marbles

We are given that at this stage, Lara has 20 marbles so we get
L = 2(M - 8) = 20
2(M - 8) = 20

2M - 16 = 20

2M = 36 ==> M = 18
L = 2M