4 (a) Enzo, Rashid and Blessy each swim as many lengths of a swimming pool as they can in 15 minutes. The results are shown in the table. Name Number of lengths Enzo 11.25 Rashid 18.75 Blessy 20 (i) Find the number of lengths Enzo swims as a per centage of the total number of lengths all three people swim. ..............................................% [2] (ii) Write the ratio of the number of lengths each person swims in the form Enzo : Rashid : Blessy. Give your answer in its simplest form. ............... : ............... : ............... [2] (cid:300)(cid:217)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:250)(cid:182)(cid:254)(cid:215) © UCLES 2024 (cid:300)(cid:228)(cid:187)(cid:244)(cid:206)(cid:287)(cid:279)(cid:243)(cid:213)(cid:252)(cid:262)(cid:261)(cid:253)(cid:184)(cid:229)(cid:260)(cid:271)(cid:258) 0580/41/O/N/24 (cid:293)(cid:277)(cid:245)(cid:213)(cid:181)(cid:181)(cid:197)(cid:181)(cid:229)(cid:277)(cid:245)(cid:261)(cid:261)(cid:245)(cid:229)(cid:245)(cid:277)(cid:213) M SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD * 0000800000007 * 7 (cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:8)(cid:44) (iii) Each length of the pool is 25 m. (a) Work out Blessy’s average swimming speed for the 15 minutes. Give your answer in metres per second. ........................................... m/s [3] (b) Rashid continues to swim at the same rate. Calculate the time it takes Rashid to swim a total distance of 5 km. Give your answer in hours and minutes. ..................... h ........................ min [4] (iv) Blessy swims for one hour. The number of lengths she swims decreases by 5% every 15 minutes. Calculate the number of lengths she swims in the final 15 minutes. ................................................. [3] (b) Another swimmer, Adam, swims 450 m, correct to the nearest 25 metres. This takes 10 minutes, correct to the nearest minute. Calculate the minimum distance Adam swims in one hour at this rate. .............................................. m [3] (cid:300)(cid:219)(cid:266)(cid:174)(cid:288)(cid:180)(cid:237)(cid:200)(cid:245)(cid:207)(cid:298)(cid:197)(cid:266)(cid:224)(cid:252)(cid:182)(cid:254)(cid:215) [Turn over © UCLES 2024 (cid:300)(cid:228)(cid:188)(cid:243)(cid:214)(cid:297)(cid:283)(cid:259)(cid:228)(cid:254)(cid:251)(cid:196)(cid:217)(cid:192)(cid:241)(cid:260)(cid:287)(cid:258) 0580/41/O/N/24 (cid:293)(cid:277)(cid:261)(cid:277)(cid:245)(cid:213)(cid:229)(cid:213)(cid:181)(cid:293)(cid:229)(cid:261)(cid:261)(cid:277)(cid:197)(cid:181)(cid:261)(cid:213) NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD NIGRAM SIHT NI ETIRW TON OD * 0000800000008 * 8 (cid:44)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:1)(cid:9)(cid:44) NIGRAM