Hi Everybody
Can you help me how to solve this?
Thanks brothers and sisters.
1) During a travel fair, 90 families choose HKG as their holiday destination.
80% of the remaining families chose TWN while the rest chose MYR.
Given that 1/10 of the families chose MYR, how many families were there at the travel fair?
+++++++++++++++++++++++++++++++++++++
2) 2/9 of A is 5/7 of B. What is the ratio of B to A??
+++++++++++++++++++++++++++++++++++++
Yours faithfully,
@LikeYou.
Originally posted by likeyou:Hi Everybody
Can you help me how to solve this?
Thanks brothers and sisters.
1) During a travel fair, 90 families choose HKG as their holiday destination.
80% of the remaining families chose TWN while the rest chose MYR.
Given that 1/10 of the families chose MYR, how many families were there at the travel fair?
+++++++++++++++++++++++++++++++++++++
2) 2/9 of A is 5/7 of B. What is the ratio of B to A??
+++++++++++++++++++++++++++++++++++++
Yours faithfully,
@LikeYou.
For question 1),
80% of the remaining families choose Taiwan means that 20% of the remaining families choose Myanmar.
20% of the remaining families = 1/10 of all families
100% of the remaining families = 1/10 X 5 = 1/2 of all families
Thus, the 90 families who chose Hong Kong = 1 - 1/2 = 1/2 of all families
Hence, the total amount of families at the fair will be 90 X 2 = 180 families.
For question 2),
2/9 of A is 5/7 of B.
We will try to make the numerator same. Thus, we have:
10/45 of A is 10/14 of B.
Hence, the ratio of B to A is 14 : 45.
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Hi Forb, thks for your solution. I will tried to explain it to my kids. Thanks alot for your help.
@LikeYou.
2)
A:2/9 -> 14/63
B:5/7 -> 45/63
B:A
Ratio -> 45:14
Originally posted by SBS8214Z:2)
A:2/9 -> 14/63
B:5/7 -> 45/63
B:A
Ratio -> 45:14
Ratio of B to A is indeed 14 : 45, not 45 : 14. You can try working backwards.