Question
If 10 workers can build 3 houses in 60 days, how many workers are needed to build 5 houses in 40 days?
"A Model A Day, Keeps The Algebra Away" - Chi Hung Chan
Focus primarily on upper primary school (P4,5,6) mathematics
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If 10 workers can build 3 houses in 60 days, how many workers are needed to build 5 houses in 40 days?
3 men, A,B, and C, worked together to paint a wall. If the painting was done by one man, the time taken to complete the wall for A,B and C would have been 6hours, 8 hours and 12hours respectively. A and B had painted for 3hours after which A rested, B and C then continued with the painting. What would be the total number of hours taken to complete the wall.
Adam and Rahmad shared some beads. If Adam gave 1/3 of his share to Rahmad, Rahmad would have 70 more beads than Adam. If Adam gave 1/5 of his share to Rahmad, Rahmad would have 10 more beads than Adam. How many beads does Adam have at first?
2/7 of the number of girls was equal to 3/5 of the number of boys at a funfair. (a) what fraction of the number of children were girls? (b) There were 253 more girls than boys. How many girls were at the funfair.
Based on the pricing (first three from left to right), how much does the rice cost ? Also, based on all the four pricings, which one is considered not fair?
You see, maths question is everywhere. Just keep your eyes open.
From ChannelNewsAsia: Jim bought some chocolates and gave half of it to Ken. Ken bought some sweets and gave half of it to Jim. Jim ate 12 sweets and Ken ate 18 chocolates. The ratio of Jim's sweets to chocolates became 1:7 and the ratio of Ken's sweets to chocolates became 1:4. How many sweets did Ken buy?