Question

Helen earned 400 in January, 450 in February, and 380 in march. to pay all of her bills, she must average at least 430 per month. for what income in April would her average for the four months be at least 430?

Answer 1

Let, the income in April = x
Then, it would be: (400 + 450 + 380 + x) / 4 = 430
1230 + x = 1720
x = 1720 - 1230
x = 490

So, your final answer is 490

Hope this helps!