maths一問

1) For the electricity bill,water bill and gas bill recevied last month, Mr.Ho paid $1000 more on the electricity bill than the water bill,and the water bill was $160 less than 2 times the gas bill.If Mr.Ho paid a total amount of $2080, how much was the electricity bill?


2)The result of adding 10 to anumber and then multiplying it by7 equal to then result of multiplying the number by 12 and adding 1 to it. Find the number.

Thx!