Q&A - P5 Math
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Jug X & Jug Y contained some apple juice. if 2/7 of the apple juice from jug Y was poured into Jug X, the ratio of the amount of apple juice in Jug Y to that in Jug X would be 10:13. What was the ratio of the amount of apple juice in jug Y to the amount of apple juice in Jug X at first?
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Carina and Leslie shared some sweets. if Carina received 8 sweets from Leslie, the ratio of the number of sweets she had to the number of sweets Leslie had would be 3:1. If Leslie received 24 sweets from Carina, he would have the same number of sweets from Carina. What was the total number of sweets shared?
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an elevator can carry either 159 adults or 186 children at one time. Given that 62 children are already in the elevator, how many adults can still get into the elevator?
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A group of girls was seated in a circle. A box of 115 sweets was passed around in a clockwise direction, starting from Mary. Each girl took a sweet each time the box was passed to her. If Mary took the last sweet in the box, she would have taken a total of 7 sweets. How many girls were there in the group?
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ttyh:
Jug X & Jug Y contained some apple juice. if 2/7 of the apple juice from jug Y was poured into Jug X, the ratio of the amount of apple juice in Jug Y to that in Jug X would be 10:13. What was the ratio of the amount of apple juice in jug Y to the amount of apple juice in Jug X at first?
2/7 of apple juice from Jug Y poured into X, 5/7 of apple juice left in Jug Y,
Jug Y : Jug X --> 10 units : 13 units
5/7 of Jug Y --> 10 units
2/7 of Jug Y --. 4 units
At first, Jug Y : Jug X --> 10 units + 4 units : 13 units - 4 units = 14 : 9
cheers. -
ttyh:
A group of girls was seated in a circle. A box of 115 sweets was passed around in a clockwise direction, starting from Mary. Each girl took a sweet each time the box was passed to her. If Mary took the last sweet in the box, she would have taken a total of 7 sweets. How many girls were there in the group?
115-1 = 114 --> 114 sweets passed 6 full rounds ie every girl took 6 sweets.
Number of girls in the group = 114/6 = 19
cheers. -
ttyh:
an elevator can carry either 159 adults or 186 children at one time. Given that 62 children are already in the elevator, how many adults can still get into the elevator?
186 children --> 159 adults
62 children --> 53 adults
159 - 53 = 106 --> 106 more adults can get into the elevator.
cheers. -
ttyh:
Carina and Leslie shared some sweets. if Carina received 8 sweets from Leslie, the ratio of the number of sweets she had to the number of sweets Leslie had would be 3:1. If Leslie received 24 sweets from Carina, he would have the same number of sweets from Carina. What was the total number of sweets shared?
If carina received 8 sweets from Leslie,
Carina's sweets : Leslie's sweets --> 3u : 1u
At first,
Carina's sweets : Leslie's sweets --> 3u-8 : 1u+8
If Leslie received 24 sweets from Carina ,
Carina's sweets : Leslie's sweets
--> 3u-8-24 : 1u+8+24
= 3u - 32 : 1u + 32
3u - 32 = 1u+32
1u --> 32
Total number of sweets shared between them --> 4 x 32 = 128
cheers. -
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MathIzzzFun:
Hi MathIzzzFun,ttyh:
A group of girls was seated in a circle. A box of 115 sweets was passed around in a clockwise direction, starting from Mary. Each girl took a sweet each time the box was passed to her. If Mary took the last sweet in the box, she would have taken a total of 7 sweets. How many girls were there in the group?
115-1 = 114 --> 114 sweets passed 6 full rounds ie every girl took 6 sweets.
Number of girls in the group = 114/6 = 19
cheers.
Can u pl clear my doubt in this sum.... :?
I worked out as
7 girls....7 sweets
11 girls....6 sweets..
And got 18...
Pl enlighten me.....
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