Q&A - P4 Math

[Kangkangteo]

In a basket, there are some oranges and apples. 2/7 of the apples is equal to 3/4 of the oranges. If there are 260 more apples than oranges, how many apples and oranges are there in the basket?

TIA!

This is a very common sum and it is not difficult. The trick is to make the 2 numerators the same.
2/7 = 6/21 of the apples is equal to 3/4= 6/8 of the oranges.

X X X X X X x x x x x x x x x x x x x x x - apples
X X X X X X x x - oranges

therefore (15-2) units =260
13 units =260
1 unit = 20
Apples =21 units =420
Oranges =8 units =160

I think you should just use 21 - 8 = 13u --> 260
(Model is also not necessary)

[lee_yl]

Nice... Learn another new thing again today.

Either method could be used. You can draw out the model to help your child to visualize the problem.

[Wgh2005]

Hi, can anyone help on this question:



Thank you!

[Nebbermind]

Hi, can anyone help on this question:



Thank you!

After,
Women : 3u
Men : 3u

Before,
Women: 5u
Men: 3u + 108

5u + 3u + 108 = 1940

Solve for u, then find 3u+108

[Wgh2005]

Thank you Nebbermind for your answer! I got it now!

[wishes]

Hi all , need help on these 2q.
1) at a florist, 5/8 of the flowers are roses. 2/9 of the remaining flowers are lilies and the rest are tulips. If there are 1408 more roses than tulips at the florist, how many flowers are there at the florist?

2) there were 482 sweets in Box A and 98 sweets in box B at first. After an equal number of sweets were added into each box, there were 4times as many sweets in box A as box B. How many sweets were added into each box?

TIA!

[Nebbermind]

Hi all , need help on these 2q.
1) at a florist, 5/8 of the flowers are roses. 2/9 of the remaining flowers are lilies and the rest are tulips. If there are 1408 more roses than tulips at the florist, how many flowers are there at the florist?


TIA!

From the 2nd sentence, you will notice that the suitable unit for the remaining flowrrs should be divisible by 9 so that 2/9 can also ve a whole unit.
Therefore, from 1st sentence, instead of using 5u out of 8u, use 15u out of 24u for roses. Remaining is 9u out of 24u.
Lilies = 2/9 of 9u = 2u
=> tulips = 7u

Roses - tulips = 15u- 7u=1408...can find value of u and 24u

[Nebbermind]

2) there were 482 sweets in Box A and 98 sweets in box B at first. After an equal number of sweets were added into each box, there were 4times as many sweets in box A as box B. How many sweets were added into each box?

TIA!

Since equal numbers of sweets added into both boxes, the difference is the same both before and after adding.

A : u+u+u+u
B: u
482 - 98 = 3u
Find u.
U-98=sweet added into each box.

[wishes]

Hi all , need help on these 2q.
1) at a florist, 5/8 of the flowers are roses. 2/9 of the remaining flowers are lilies and the rest are tulips. If there are 1408 more roses than tulips at the florist, how many flowers are there at the florist?


TIA!

From the 2nd sentence, you will notice that the suitable unit for the remaining flowrrs should be divisible by 9 so that 2/9 can also ve a whole unit.
Therefore, from 1st sentence, instead of using 5u out of 8u, use 15u out of 24u for roses. Remaining is 9u out of 24u.
Lilies = 2/9 of 9u = 2u
=> tulips = 7u

Roses - tulips = 15u- 7u=1408...can find value of u and 24u

Hi nebbermind,
I'm still confused abt this part. How u get 15/24? "Therefore, from 1st sentence, instead of using 5u out of 8u, use 15u out of 24u for roses"

[Nebbermind]

Hi nebbermind,
I'm still confused abt this part. How u get 15/24? "Therefore, from 1st sentence, instead of using 5u out of 8u, use 15u out of 24u for roses"

15/24 is the same as 5/8.