The total number of girls in the combined junior and senior classes is equal to the number of boys in those two classes. If the senior class has 400 students and the junior class has 300 students, and if the ratio of boys to girls in the senior class is 5:3, what is the ratio of boys to girls in junior class?
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Model Approach for Primary School Mathematics
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2/9 of the runners in a race are boys.3/7 of the remaining runners are men.1/4 of the rest are girls. There are 42 more women than girls. How many runners are there in the race?
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?
20% of John's savings is $120 more than 30% of Brian's savings.
After John spends 5/6 of his savings, and Brian spends 1/2 of his savings, John has $20 more than Brian. How much did John and Brian save ?
There were 40 more raisin buns than strawberry buns. After 3/4 of the raisin buns and 4/5 of the strawberry buns were sold, there were 28 buns left.
(a) How many strawberry buns were there at first?
(b) What fraction of the buns sold were raisin buns?
Distance between Town X and Y is 100km.
At 07:00, Sam left Town X and cycled towards Y.
Ann left Town X and cycled towards Y at 07:30.
Ann's cycling speed was 4 km/h faster than Sam. At 10:00, Ann caught up with Samuel. When Ann was 28 km from town Y, she stopped to wait for Samuel.
(a) How far was Samuel from Ann when she stopped to wait for him?
(b) How many minutes did Ann wait for Samuel?
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Hope this blog can help the parents as well as the kids.
A box contained 50¢ coins and 20¢ coins in the ratio 2:3. When I took out four 50¢, exchanged them for 20¢ coins, and put then put the money back into the box, the ratio became 2:7. Find the sum of money in the box.
Aminah and Belinda each has some money. If Aminah spends $8, the ratio od the amount of money Aminah has to the amount of money Belinda has becomes 2:3. If Belinda spends $8, the ratio of the amount of money Aminah has to the amount of money Belinda has will be 11:14. How much money do they have altogether?
A fruit seller brought 350 apples for $140. 30 apples were rotten. He packed the rest in packets of 4 and sold each packet for $1. How much money did he lose from sale ?
Gilian spent 1/3 of her salary each month, gave 2/5 of it to her mother and saved the rest. If she saved $400 each month, what is her total salary ?
Suzanne baked 1200 tartlets. She gave 1/2 of them to her mother and 1/4 of the rest to her sister. How many tartlets did she have left ?
Two pails, A and B, contain 1 litre 900 ml of water altogether. After 680 ml of water is poured from pail A into pail B, the amount of water in each pail is the same. How much water was in pail A at first ? Give your answer in litre and ml.
