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12 Aug 2019, 01:04
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Jasmine has twice as many pairs of earrings as Maura. If Jasmine gives Maura 10 pairs of her earrings, she will have half as many pairs as Maura. How many pairs of earrings do Jasmine and Maura have together?
(A) 10
(B) 20
(C) 30
(D) 40
(E) 60
(A) 10
(B) 20
(C) 30
(D) 40
(E) 60
12 Aug 2019, 01:13
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Bunuel
Jasmine has twice as many pairs of earrings as Maura. If Jasmine gives Maura 10 pairs of her earrings, she will have half as many pairs as Maura. How many pairs of earrings do Jasmine and Maura have together?
(A) 10
(B) 20
(C) 30
(D) 40
(E) 60
(A) 10
(B) 20
(C) 30
(D) 40
(E) 60
given
j=2m
j-10=m-10/2
solve m=10
and j=20
so j+m=30
IMO C
12 Aug 2019, 03:06
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X=2Y
X-10 = Y+10 /2
2Y-10= Y+10 /2
4Y-20= Y+10
3Y=30 ==》 Y=10 so, X=20
10+20=30
Option C
Posted from my mobile device
X-10 = Y+10 /2
2Y-10= Y+10 /2
4Y-20= Y+10
3Y=30 ==》 Y=10 so, X=20
10+20=30
Option C
Posted from my mobile device
