Amira saved RM5 in February and twice as much in each successive month from the preceding month. Find the amount of money she has in December of the same year
To find the amount of money Amira has in December, we need to find the cumulative sum of her savings each month.
In February, she saved RM5.
In March, she saved twice as much as in February, so she saved RM5 x 2 = RM10.
In April, she saved twice as much as in March, so she saved RM10 x 2 = RM20.
In May, she saved twice as much as in April, so she saved RM20 x 2 = RM40.
In June, she saved twice as much as in May, so she saved RM40 x 2 = RM80.
In July, she saved twice as much as in June, so she saved RM80 x 2 = RM160.
In August, she saved twice as much as in July, so she saved RM160 x 2 = RM320.
In September, she saved twice as much as in August, so she saved RM320 x 2 = RM640.
In October, she saved twice as much as in September, so she saved RM640 x 2 = RM1280.
In November, she saved twice as much as in October, so she saved RM1280 x 2 = RM2560.
In December, she saved twice as much as in November, so she saved RM2560 x 2 = RM<<2560*2=5120>>5120.
Therefore, Amira has RM5120 in December.