Q&A - P5 Math
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chloecube:
R [---------][---------][---------][---------]
there were 4 times as many red pens as blue pens in a box. 415 red pens and 46 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?
B [---------]
R [][][][46][][][][46][][][][46][][][][46]
B [][][][46]
[][][46][][][][46][][][][46][][][][46] --> 415
11u + 46*4 --> 415
11u --> 231
1u --> 21
No of blue pens were there in the beginning = 3u + 46 = 3*21 + 46 = 109 (Ans) -
jieheng:
thank you so much !!!
R [---------][---------][---------][---------]chloecube:
there were 4 times as many red pens as blue pens in a box. 415 red pens and 46 blue pens were removed from the box. as a result, the number of blue pens became 3 times as many as red pens. how many blue pens were there in the beginning?
B [---------]
R [][][][46][][][][46][][][][46][][][][46]
B [][][][46]
[][][46][][][][46][][][][46][][][][46] --> 415
11u + 46*4 --> 415
11u --> 231
1u --> 21
No of blue pens were there in the beginning = 3u + 46 = 3*21 + 46 = 109 (Ans)
so all for the typo earlier :oops: -
There are 45 peach tarts, 120 strawberry tarts and 150 chocolate tarts. If all the tarts are placed into the least number of boxes such that there are equal number of each type of tarts in each box, how many tarts are there in each box ?
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BigDevil:
There are 45 peach tarts, 120 strawberry tarts and 150 chocolate tarts. If all the tarts are placed into the least number of boxes such that there are equal number of each type of tarts in each box, how many tarts are there in each box ?
this question is not structured properly... it would be more logical to replace \"least\" with \"maximum\".
cheers. -
At a science competition , 25 questions were given. Each correct question earned 4 points,and 2 points were deducted for each incorrect answer. Luang Hong answered all but one of the problems , receiving a score of 66.how many correct answers did she have?
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Grandma bought an equal number of apple and kiwi. The apple were 8 for $4 and kiwi 5 for $6. She paid $84 more for kiwi than apple. How much did she paid in all.
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I work out to a)$204 b)240
not sure if correct -
Kindly help me with some questions please.
The number of girls in an international sch is 390 more than 1/3 the enrolment of the international sch. The number of boys in an international sch is 660 more than 1/5 the enrolment of the international sch. How many girls are there in the international sch? -
Please help me with this qn too.
Mrs Ravi was getting some items from an electronics store. First, she bought a tv set with half of her money plus $14. Next she bought a washing machine with half of the remaining money plus $13. After that she bought an oven with half of the money left over plus $12. She ended her shopping spree by buying a rice cooker with half of the money left plus $11. When she arrived home, Mrs Ravi was left with $35. How much money did Mrs Ravi have at first? -
Please help me with this qn too.
Mrs Ravi was getting some items from an electronics store. First, she bought a tv set with half of her money plus $14. Next she bought a washing machine with half of the remaining money plus $13. After that she bought an oven with half of the money left over plus $12. She ended her shopping spree by buying a rice cooker with half of the money left plus $11. When she arrived home, Mrs Ravi was left with $35. How much money did Mrs Ravi have at first?
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