90 is 1/10 of what ? : 90 = 1/10x...multiply both sides by 10, this eliminates the 10 on the right 90 10 = x 900 = x <=== 4. 5000 is 1/10 of what ? : 5000 = 1/10x ...multiply by 10 5000 10 = x 50,000 = x <=== 8. 2000 : 10 times as much = 20,000 : 1/10 as much = 1/10(2000) = 200 9. 400 : 10 times as much = 4000 : 1/10 as much = 1/10(400) = 40 10. 60 : 10 times as much = 600 : 1/10 as much = 1/10(60) = 6 12. u got it correct..it is 30,000
