we will set the denominator equal by multiplying both the numerator and denominator then just adding the numerator while keeping the denominator. look at my work. so your answer is 5/8
Find a common denominator for both. It is 8. So you leave 1/8 alone and you find out how much you have to multiply the other denominator to get It to 8. 2x4 is 8 so, you multiply 1x4 and that is 4. So the new equation is 4/8+1/8 and that is 5/8
So we know that $15 was 70% of the original. We can then cross multiply and divide (15 x 100 ÷ 70) The answer you get is 21.4285714 which then rounded is $21.43!! I hope this helped!
