Answer:
£1300
Step-by-step explanation:
The ratio of their accounts = 3 : 7 = 3x : 7x ( x is a multiplier )
Terry puts £220 in his account, that is 3x + 220
Fay withdraws £300, that is 7x - 300
They now have the same amounts in their accounts, thus
7x - 300 = 3x + 220 ( subtract 3x from both sides )
4x - 300 = 220 ( add 300 to both sides )
4x = 520 ( divide both sides by 4 )
x = 130
Thus
Together they had 3x + 7x = 10x = 10 × 130 = £1300 altogether
